Z-KEY-2ETH-I Protocol Converter
“
Product Information
Specifications
- Product Name: Multiprotocol Key Gateways Series IEC 61850 –
Modbus RTU&TCP Gateways - Manufacturer: Seneca
- Protocol Support: IEC 61850, Modbus RTU, Modbus TCP
- Hardware Revision: Available
- Firmware Version: Latest version supports new functions from
firmware rev 111
Product Usage Instructions
Description
The Multiprotocol Key Gateways Series by Seneca are designed to
provide seamless communication between devices using IEC 61850 and
Modbus protocols.
Device Hardware Revision
The hardware of the device may have different revisions, ensure
compatibility with your system requirements.
Firmware Update
Regularly check for firmware updates on the Seneca website to
access new functions and improvements.
Operating Mode
The device can operate as a Gateway IEC 61850 server or Modbus
master, facilitating communication between different protocols.
Gateway Configuration
Configure the gateway using the provided software tools for
optimal performance.
Gateway Webservers
Access the gateway configuration settings through the built-in
webservers for easy setup and monitoring.
FAQ
Q: How do I update the firmware of the device?
A: To update the firmware, visit the Seneca website and download
the latest firmware version. Follow the instructions provided in
the user manual for firmware update procedure.
Q: Can the device be used with both IEC 61850 and Modbus
devices simultaneously?
A: Yes, the device can act as a bridge between IEC 61850 and
Modbus devices, allowing seamless communication between them.
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USER MANUAL
MULTIPROTOCOL “KEY” GATEWAYS SERIES IEC 61850 – MODBUS RTU&TCP GATEWAYS
SENECA S.r.l. Via Austria 26 35127 Z.I. – PADOVA (PD) – ITALY Tel. +39.049.8705355 8705355 Fax +39 049.8706287
www.seneca.it
ORIGINAL INSTRUCTIONS
User Manual
IEC 61850 MODBUS GATEWAYS
CAUTION
SENECA does not guarantee that all specifications and/or aspects of the product and firmware, included in them, will meet the requirements of the actual final application even if the product referred to in this documentation is in compliance with the technological state of the art. The user assumes full responsibility and/or risk with regard to the configuration of the product to achieve the intended results in relation to the specific installation and/or end application. SENECA may, with prior agreement, provide consultancy services for the successful completion of the final application, but under no circumstances can it be held responsible for its proper functioning. The SENECA product is an advanced product, the operation of which is specified in the technical documentation supplied with the product itself and/or can be downloaded, if desired prior to purchase, from the www.seneca.it website. SENECA has a policy of continuous development and accordingly reserves the right to make and/or introduce without prior notice – changes and/or improvements to any product described in this documentation. The product described in this documentation may solely and exclusively be used by personnel qualified for the specific activity and in accordance with the relevant technical documentation, with particular attention being paid to the safety instructions. Qualified personnel means personnel who, on the basis of their training, competence and experience, are able to identify risks and avoid potential hazards that could occur during the use of this product. SENECA products may only be used for the applications and in the manner described in the technical documentation relating to the products themselves. To ensure proper operation and prevent the occurrence of malfunctions, the transport, storage, installation, assembly, maintenance of SENECA products must comply with the safety instructions and environmental conditions specified in this documentation. SENECA’s liability in relation to its products is governed by the general conditions of sale, which can be downloaded from www.seneca.it. Neither SENECA nor its employees, within the limits of applicable law, will in any case be liable for any lost profits and/or sales, loss of data and/or information, higher costs incurred for goods and/or replacement services, damage to property and/or persons, interruption of activities and/or provision of services, any direct, indirect, incidental, pecuniary and non-pecuniary, consequential damages in any way caused and/or caused, due to negligence, carelessness, incompetence and/or other liabilities arising from the installation, use and/or inability to use the product.
CONTACT US Technical Support Product information
support@seneca.it sales@seneca.it
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Document revisions
User Manual
DATE
16/09/2024
24/02/2025 27/05/2025
REVISION
0
1 2
NOTES
First revision
Added led chapter Added modbus registers info chapter Added new functions from firmware rev 111
IEC 61850 MODBUS GATEWAYS
AUTHOR
MM MM MM
This document is the property of SENECA srl. Copies and reproduction are prohibited unless authorised.
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IEC 61850 MODBUS GATEWAYS
TABLE OF CONTENTS
DESCRIPTION …………………………………………………………………………………………….6
IEC61850 PROTOCOL ………………………………………………………………………………………………………………………………………….6 FEATURES OF THE “KEY” SERIES COMMUNICATION PORTS……………………………………………………………………………..6
DEVICE HARDWARE REVISION …………………………………………………………………..7
FLEX TECHNOLOGY FOR PROTOCOL CHANGE ………………………………………….8
CHANGING PROTOCOLS WITH THE SENECA DISCOVERY DEVICE SOFTWARE ………………………………………………….9
LED MEANING…………………………………………………………………………………………..10
Z-KEY-I (IEC61850) MODEL LED…………………………………………………………………………………………………………………………10 R-KEY-LT-I (IEC61850) MODEL LED……………………………………………………………………………………………………………………11 Z-KEY-2ETH-I (IEC61850) MODEL LED ……………………………………………………………………………………………………………….12
ETHERNET PORT………………………………………………………………………………………13
FIRMWARE UPDATE………………………………………………………………………………….13
OPERATING MODE ……………………………………………………………………………………14
GATEWAY IEC 61850 SERVER / MODBUS MASTER ……………………………………………………………………………………………14
IEC61850 IMPLEMENTATION ON THE “KEY” SERIES GATEWAYS………………15
Basic SCL structure…………………………………………………………………………………………………………………………………………..15 Modbus variables………………………………………………………………………………………………………………………………………………15 DataSet ……………………………………………………………………………………………………………………………………………………………..15 Report Control Block (RCB) unbuffered/buffered in the SCL structure ………………………………………………………………..16
GATEWAY CONFIGURATION …………………………………………………………………….17
GATEWAY CONFIGURATION WITH THE WEBSERVER FOR THE “COPADATA IEC61850 CLIENTTM” CLIENT……….17
GATEWAY WEBSERVERS …………………………………………………………………………25
WEBSERVER DEI GATEWAY “-I” ……………………………………………………………………………………………………………………….25 WEBSERVER MODE AND IEC61850 MODE ………………………………………………………………………………………………..25 MANUAL PROCEDURE FOR SWITCHING FROM IEC61850 MODE TO WEBSERVER MODE AND VICE VERSA 25 STEP BY STEP GUIDE FOR THE FIRST ACCESS TO THE WEBSERVER ……………………………………………………..26 WEBSERVER DEVICE CONFIGURATION ……………………………………………………………………………………………………27
10.1.4.1. WEBSERVER SECTIONS …………………………………………………………………………………………………………………………..28 10.1.4.2. “STATUS” SECTION …………………………………………………………………………………………………………………………………..29 10.1.4.3. “SETUP” SECTION …………………………………………………………………………………………………………………………………….30 10.1.4.3.1. SAVING A CONFIGURATION ON A FILE …………………………………………………………………………………………………34 10.1.4.3.2. IMPORTING A CONFIGURATION FROM A FILE ………………………………………………………………………………………35 10.1.4.4. “SETUP COMMANDS/TAGS” SECTION ……………………………………………………………………………………………………….35 10.1.4.5. “I/O MAPPING” SECTION……………………………………………………………………………………………………………………………36
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10.1.4.1. 10.1.4.1. 10.1.4.2. 10.1.4.1. 10.1.4.1. 10.1.4.2. 10.1.4.1.
“SETUP IEC VARIABLES” SECTION ……………………………………………………………………………………………………………37 “SETUP IEC DATASET” SECTION……………………………………………………………………………………………………………….38 “SETUP IEC REPORT CONTROL BLOCK” SECTION ……………………………………………………………………………………38 “FIRMWARE UPDATE” SECTION ………………………………………………………………………………………………………………..40 “CERTIFICATE SETUP” SECTION ………………………………………………………………………………………………………………41 SERIAL “SERIAL TRAFFIC MONITOR” ………………………………………………………………………………………………………..41 LOCAL TIME SETUP ………………………………………………………………………………………………………………………………….41
SUPPORTED MODBUS COMMUNICATION PROTOCOLS …………………………….42
SUPPORTED MODBUS FUNCTION CODES…………………………………………………………………………………………………………42
RESETTING THE DEVICE TO ITS FACTORY CONFIGURATION ……………………43
INFORMATION ABOUT MODBUS REGISTERS ……………………………………………44
NUMBERING OF “0-BASED” OR “1-BASED” MODBUS ADDRESSES …………………………………………………………………..44 NUMBERING OF MODBUS ADDRESSES WITH “0-BASED” CONVENTION …………………………………………………………..45 NUMBERING OF MODBUS ADDRESSES WITH “1 BASED” CONVENTION (STANDARD) ………………………………………45 BIT CONVENTION WITHIN A MODBUS HOLDING REGISTER ………………………………………………………………………………46 MSB and LSB BYTE CONVENTION WITHIN A MODBUS HOLDING REGISTER……………………………………………………..46 REPRESENTATION OF A 32-BIT VALUE IN TWO CONSECUTIVE MODBUS HOLDING REGISTERS ………………………47 TYPE OF 32-BIT FLOATING POINT DATA (IEEE 754) …………………………………………………………………………………………..48
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IEC 61850 MODBUS GATEWAYS
DESCRIPTION
The Z-KEY-I, R-KEY-LT-I, Z-KEY-2ETH-I products allow to convert data coming from the Modbus serial bus or Modbus TCP-IP Ethernet into the IEC61850 protocol or vice versa.
IEC61850 PROTOCOL
IEC 61850 is a standard for the design of automation systems for electrical substations. It is part of the International Electrotechnical Commission. The data model defined in IEC 61850 is supported, for example, by the MMS protocol.
PROTOCOL Type of protocol
IEC 61850 server ICD edition 1.0 MMS (manufacture message specification) protocol supported Report Control Block buffered/unbuffered supported Encrypted connection with certificates supported Goose and SMV protocols not supported TLS 1.2 connection, X.509 certificate management
MEMORY Memory size of variables
max 50 IEC variables
FEATURES OF THE “KEY” SERIES COMMUNICATION PORTS
PRODUCT
Z-KEY-I R-KEY-LT-I Z-KEY-2ETH-I
ETHERNET PORTS
1 1 2
SERIAL PORT # 1 RS232/RS485
CONFIGURABLE 1 1 1
RS485 SERIAL PORT # 2
1 NO 1
ISOLATED SERIAL PORTS
Yes, both ports NO
Yes, both ports
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IEC 61850 MODBUS GATEWAYS
DEVICE HARDWARE REVISION
With a view to continuous improvement, Seneca updates and makes the hardware of its devices increasingly more sophisticated. It is possible to know the hardware revision of a product via the label on the side of the device. An example of an R-KEY-LT product label is the following:
The label also shows the firmware revision present in the device (in this case 2.0.1.0) at the time of sale. To improve performance or extend functionality, Seneca recommends updating the firmware to the latest available version (see the section dedicated to the product on www.seneca.it).
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FLEX TECHNOLOGY FOR PROTOCOL CHANGE
Starting from the hardware revision indicated in the following table, the KEY series devices include Flex technology.
GATEWAY
Z-KEY R-KEY-LT Z-KEY-2ETH
FLEX TECHNOLOGY SUPPORTED BY HARDWARE REVISION “G00” “E00” “C00”
Flex allows you to change the combination of industrial communication protocols supported by the gateways at will from a list of available ones, the development is continuously updated, for a complete list refer to the page: https://www.seneca.it/flex/
Some examples of supported protocols are:
The gateway then becomes “universal” and compatible with Siemens or Rockwell or Schneider systems etc. without the need to purchase different hardware.
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CHANGING PROTOCOLS WITH THE SENECA DISCOVERY DEVICE SOFTWARE
From revision 2.8 the Seneca Discovery Device software identifies the devices that support the “Flex” technology:
For example, in the case in the figure it is possible to press the “Change Protocol” button and select the destination protocol from those in the list:
At the end of the operation, bring (only at the first power-on) the dip switches 1 and 2 to “ON” to force the device to default (see also the chapter “RESETTING THE DEVICE TO ITS FACTORY CONFIGURATION”).
Always refer to the user manual of the communication protocol installed in the device by downloading it from the Seneca website.
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IEC 61850 MODBUS GATEWAYS
LED MEANING
The devices are equipped with LEDs whose meaning is as follows:
Z-KEY-I (IEC61850) MODEL LED
LED
STATUS
Steady on: device powered and IP address set
PWR
Flashing: IP address not yet set
Off: device not powered
COM
Not used
Flashing: data transmission on serial port #1
TX1
Off: no transmission on serial port #1
Flashing: data reception on serial port #1
RX1
Steady on: check wiring on serial port #1
Off: no reception on serial port #1 Flashing: data transmission on serial port #2 TX2 Off: no transmission on serial port #2 Flashing: data reception on serial port #2
RX2
Steady on: check wiring on serial port #2
Off: no reception on serial port #2 Flashing: presence of data on ethernet port
ETH (GREEN)
ACT Steady on: ethernet port connected but no data present Off: check wiring of the ethernet port
ETH (YELLOW)
LNK Steady on: ethernet cable connected Off: check the wiring of the ethernet port
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IEC 61850 MODBUS GATEWAYS
R-KEY-LT-I (IEC61850) MODEL LED
LED
STATUS
Steady on: device powered and IP address set
PWR
Flashing: IP address not yet set
Off: device not powered
COM
Not used
Flashing: data transmission on serial port
TX
Off: no transmission on serial port
Flashing: data reception on serial port
RX
Steady on: check wiring on serial port
Off: no reception on serial port Flashing: presence of data on ethernet port
ETH (GREEN)
ACT Steady on: ethernet port connected but no data present
ETH (YELLOW)
Off: check wiring of the ethernet port LNK Steady on: ethernet cable connected
Off: check the wiring of the ethernet port
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Z-KEY-2ETH-I (IEC61850) MODEL LED
LED
STATUS
Steady on: device powered and IP address set
PWR
Flashing: IP address not yet set
Off: device not powered
COM
Not used
Flashing: data transmission on serial port #1
TX1
Off: no transmission on serial port #1
Flashing: data reception on serial port #1
RX1
Steady on: check wiring on serial port #1
Off: no reception on serial port #1 Flashing: data transmission on serial port #2 TX2 Off: no transmission on serial port #2 Flashing: data reception on serial port #2
RX2
Steady on: check wiring on serial port #2
Off: no reception on serial port #2 Flashing: presence of data on ethernet port #1
ET1
Steady on: ethernet port #1 connected but no data present
Off: check wiring of ethernet port #1 Flashing: presence of data on ethernet port #2
ET2
Steady on: ethernet port #2 connected but no data present
Off: check wiring of ethernet port #2
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IEC 61850 MODBUS GATEWAYS
ETHERNET PORT
The factory configuration of the Ethernet port is:
STATIC IP: 192.168.90.101 SUBNET MASK: 255.255.255.0 GATEWAY: 192.168.90.1
Multiple devices must not be inserted on the same network with the same static IP.
ATTENTION!
DO NOT CONNECT 2 OR MORE FACTORY-CONFIGURED DEVICES ON THE SAME NETWORK, OR THE DEVICE WILL NOT WORK
(CONFLICT OF IP ADDRESSES 192.168.90.101)
FIRMWARE UPDATE
In order to improve, add or optimize the functions of the product, Seneca releases firmware updates on the device section on the www.seneca.it website The firmware update is performed using Seneca tools or the webserver.
ATTENTION! NOT TO DAMAGE THE DEVICE DO NOT REMOVE THE POWER SUPPLY DURING THE FIRMWARE
UPDATE OPERATION.
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OPERATING MODE
The Gateway allows you to operate in the following mode: GATEWAY IEC 61850 SERVER / MODBUS RTU/TCP MASTER
GATEWAY IEC 61850 SERVER / MODBUS MASTER This operating mode allows to connect an IEC 61850 SCADA client with Modbus RTU/ASCII Slave and/or remote TCP Server I/O devices
The Gateway, on the field side, works as a Modbus master / Modbus Client device and on the other side as an IEC 61850 server via Ethernet. The Modbus requests (read or write commands) are configured in the gateway device and an ICD file is automatically generated according to the IEC 61850 standard. Once this file is imported into the SCADA (it is also possible to search for the node) all the configured IO will be accessible without any other configuration.
In addition to the serial devices, it is also possible to connect up to 3 remote Modbus TCP-IP servers.
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IEC61850 IMPLEMENTATION ON THE “KEY” SERIES GATEWAYS
Given the complexity of the IEC61850 protocol, the “KEY” series gateways implement an IEC61850 server with some simplified features that we list:
Basic SCL structure
The basic SCL structure is constant and is represented by 3 logical nodes:
GGIO1 represents the logical Node Generic IO 1, here all the variables coming from the Modbus buses will be present. LLN0 represents the logical node zero. Contains the data relating to the Intelligent Electronic Device (IED family KEY) LPHD1 represents the physical logic node 1. Contains information relating to the physical device.
Modbus variables
When variables are added (reads from the Modbus protocol) these will always be added to the logic node GGIO1. For example, for the “VAR1” variable we have:
DataSet
For the Report Data Blocks it is necessary to define one or more sets of variables, this is done through the definition of the datasets. Datasets can be used across different Report Control Blocks.
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IEC 61850 MODBUS GATEWAYS
Report Control Block (RCB) unbuffered/buffered in the SCL structure
The IEC 61850 standard defines a reporting mechanism that uses spontaneous data transmission from the server to the client. This aims to minimize the network load. The generation and transmission of the report are controlled by the report control blocks. A report control block is defined by its attributes, such as the assigned dataset, trigger options and optional fields. The dataset is sent directly from the server to the client in case the configured event has occurred. The KEY series gateways support both buffered and unbuffered RCBs.
In unbuffered RCBs the data is transmitted as defined by the chosen trigger options. In case of a connection loss the data is not stored. Transmission resumes once the connection is re-established but information that may have been transmitted during the connection loss will be lost. These RCBs are ideal for managing alarms.
In buffered RCBs, however, in the event of a connection interruption, the data is stored in a circular buffer. As soon as the connection is re-established, the buffered information is transmitted in chronological order. These RCBs are ideal for managing measurements.
When Report Data Blocks are defined they can be associated with GGIO1 or LLN0:
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GATEWAY CONFIGURATION
GATEWAY CONFIGURATION WITH THE WEBSERVER FOR THE “COPADATA IEC61850 CLIENTTM” CLIENT
The COPADATA “IEC61850 Client” software will be used as IEC 61850 client for Windows. For more information on the client software, refer to:
https://www.copadata.com
The purpose is to configure the gateway so that it can read a register coming from the serial modbus RTU protocol from a 61850 client.
We configure the Gateway via the webserver, first we activate the webserver (by default the device is in IEC61850 mode), we hold down the side button until the device restarts. At this point the PWR LED starts to flash to indicate the operating mode as a webserver for the configuration. The default address of the webserver is:
http://192.168.90.101
user: admin password: admin
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First, let’s configure the Ethernet and serial parameters:
IEC 61850 MODBUS GATEWAYS
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N.B. the protocol requires the use of UTC time to send the timestamp, we therefore recommend setting an NTP server and GMT = 0. The date/time after a reboot will be synchronized by the NTP server, it is therefore necessary that the device has the ability to access the server. IEC MODEL NAME and IEC DEVICE NAME are important in order to configure the IED and the logical device.
Now let’s create the Modbus master requests (commands). Let’s enter the Setup Modbus Commands/Tags page:
Let’s read 10 holding registers from 40001 and 40010 (offset 0 and 9) from the device with station address 1, press the “APPLY” button.
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Now the read bytes are updated in the internal memory of the gateway, let’s go to the I/O Mapping page:
At this point we define an IEC variable associated with the first 2 bytes acquired from Modbus:
N.B. mnemonic name represents the Data Object with which the variable will be exposed in the 61850 protocol. The 2 byte Modbus conversion must be brought to 32 bits since the 16-bit data type does not exist. Scaling is only available in the case of Float data type. It is also possible to discretize the single bit of the word in the boolean data type. Three data types are managed: INS (32-bit integer) SPS (Boolean) MV(32-BIT FLOAT)
We confirm with APPLY. If we go to the “Status” section we will find the first 20 bytes in memory with the values read from Modbus and the IEC variable we have defined (linked to the first 2 bytes):
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Let’s now define a Dataset and then an associated Report Control Block. Let’s start by defining a Data Set from the “SETUP IEC DATASET” section. Let’s create a Dataset on the logical node LLN0 and select GGIO1.VAR1[ST] to add the variable VAR1 and the subattributes:
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Let’s press “APPLY” and the Dataset is created:
IEC 61850 MODBUS GATEWAYS
Let’s now go to the “SETUP IEC REPORT CONTROL BLOCK” section and press the ADD button:
We have selected the logical Node where we defined the Dataset, we define it buffered with a buffer time of 1000 ms.
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Let’s confirm with “APPLY” and we obtain our buffered Report Control Block:
IEC 61850 MODBUS GATEWAYS
Let’s now go back to the “STATUS” section and press the “Start IEC” button, at this point the device restarts in IEC61850 mode (the webserver is disabled), the operation could also be obtained by holding down the side button.
Now let’s open the 61850 client and set up the connection to our KEY-I and import the RCB:
Let’s start the client and note both the IEC variable (VAR1) and the RCB:
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GATEWAY WEBSERVERS
WEBSERVER DEI GATEWAY “-I”
WEBSERVER MODE AND IEC61850 MODE The device is normally in Webserver mode. To access the internal webserver, you must put the device in Webserver mode by pressing the button following the procedure:
MANUAL PROCEDURE FOR SWITCHING FROM IEC61850 MODE TO WEBSERVER MODE AND VICE VERSA
To force webserver mode: 1) Turn on the device 2) Keep the PS1 button pressed until all LEDs turn off 3) Release the button 4) The device restarts and the “PWR” led flash slowly to indicate webserver mode
To force IEC 61850 mode: 1) Turn on the device 2) Keep the PS1 button pressed until all LEDs turn off 3) Release the button The device restarts and the “PWR” led flash slowly to indicate IEC 61850 mode
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STEP BY STEP GUIDE FOR THE FIRST ACCESS TO THE WEBSERVER
STEP 1: POWER THE DEVICE AND CONNECT THE ETHERNET PORT, PUT THE DEVICE IN WEBSERVER MODE
SENECA DISCOVERY DEVICE SOFTWARE STEP 2 If you need to change the IP address of the device (default 192.168.90.101), launch the Seneca Discovery Device software and perform the SCAN, select the device and press the “Assign IP” button, set a configuration compatible with your PC, for example:
Confirm with OK. Now the device can be reached via Ethernet from your PC.
STEP 3 ACCESS TO THE CONFIGURATION WEBSERVER
ENTER your access credentials: user: admin password: admin
ATTENTION!
THE WEB BROWSERS WHICH HAVE BEEN TESTED FOR COMPATIBILITY WITH THE DEVICE WEBSERVER ARE:
MOZILLA FIREFOX AND GOOGLE CHROME. THEREFORE, THE OPERATION WITH OTHER BROWSERS IS NOT GUARANTEED
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WEBSERVER DEVICE CONFIGURATION For further information on the access to the webserver of a new device, please refer to chapter 10.1.3.
ATTENTION!
THE WEB BROWSERS WHICH HAVE BEEN TESTED FOR COMPATIBILITY WITH THE DEVICE WEBSERVER ARE:
MOZILLA FIREFOX AND GOOGLE CHROME. THEREFORE, THE OPERATION WITH OTHER BROWSERS IS NOT GUARANTEED
ATTENTION!
AFTER THE FIRST ACCESS CHANGE USER NAME AND PASSWORD IN ORDER TO PREVENT ACCESS TO THE DEVICE TO UNAUTHORIZED PEOPLE.
ATTENTION!
IF THE PARAMETERS TO ACCESS THE WEBSERVER HAVE BEEN LOST, TO ACCESS IT, IT IS NECESSARY TO GO THROUGH THE PROCEDURE TO RESET THE FACTORY-SET CONFIGURATION
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10.1.4.1. WEBSERVER SECTIONS
The Webserver is divided into pages (sections) representing the various gateway functions:
Status It is the section that displays the values of Modbus requests in real time.
Setup This is the section that allows the basic configuration of the device, it also allows you to export or import a configuration.
Setup Modbus Commands / Tags It is the section that allows you to add/modify the Modbus commands of the Modbus devices connected to the gateway.
I/O Mapping This is the section that allows you to remap the bytes relating to the data coming from the Modbus protocol.
Setup IEC Variables This is the section that allows you to create IEC variables starting from the acquisitions of Modbus commands.
Setup IEC Dataset This is the section that allows you to create datasets to be used in Report Control Blocks.
Setup IEC Report Control Block This is the section that allows you to create Report Control Blocks.
Firmware Update This is the section that allows you to update the device firmware.
Certificate Setup This is the section that allows you to manage X509 certificates
Serial Traffic Monitor It allows to analyse the ModBUS frames of the serials.
UTC Time Setup This allows you to set the device date/time
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10.1.4.2. “STATUS” SECTION The Status section displays the status of the values acquired from modbus in the memory:
There are two types of memories: that of the read-only variables and that of the write-only variables (supported according to ICD standard edition 1,0).
GET ICD FILE allows you to export the configuration to be imported into an IEC61850 client that supports the ICD format.
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10.1.4.3. “SETUP” SECTION
DHCP (ETH) (default: Disabled) Sets the DHCP client to get an IP address automatically.
STATIC IP (default: 192.168.90.101) Sets the device static address. Careful not to enter devices with the same IP address into the same network.
STATIC IP MASK (default: 255.255.255.0) Sets the mask for the IP network.
STATIC GATEWAY (default: 192.168.90.1) Sets the gateway address.
TCP-IP PORT (default: 502) Sets the communication port for the Modbus TCP-IP client protocol.
TCP-IP TIMEOUT [ms] (default 512 ms) Sets the waiting time for a request to be considered in timeout.
PORT #1 MODBUS PROTOCOL (default RTU) Sets the protocol on the serial between Modbus RTU or Modbus ASCII
PORT #2 MODBUS PROTOCOL (default RTU) Sets the protocol on the serial between Modbus RTU or Modbus ASCII
PORT #1 BAUDRATE (default: 38400 baud) Selects the communication speed of the COM #1 serial port
PORT #1 DATA BITS (default: 38400 baud) Selects the communication speed of the COM #1 serial port
PORT #1 PARITY (default: None) Sets the parity for the COM #1 serial communication port.
PORT #1 STOP BIT (default: 1) Sets the number of stop bits for the COM #1 serial communication port.
PORT #1 TIMEOUT [ms] Sets the wait time before defining fail.
PORT #1 WRITING RETRIES (default: 3)
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Selects the number of writing attempts to be made on a serial slave before returning an error.
PORT #1 MAX READ NUM Sets the maximum number of simultaneous serial reading ModBUS registers, the firmware will use this value to optimize the ModBUS readings.
PORT #1 MAX WRITE NUM Sets the maximum number of simultaneous writing ModBUS registers of the serial, the firmware will use this value to optimize the ModBUS writings.
PORT #2 BAUDRATE (default: 38400 baud) (only for Z-KEY-I and Z-KEY-2ETH-I) Selects the communication speed of the COM #2 serial port
PORT #2 DATA BITS (default: 38400 baud) (only for Z-KEY-I and Z-KEY-2ETH-I) Selects the communication speed of the COM #2 serial port
PORT #2 PARITY (default: None) (only for Z-KEY-I and Z-KEY-2ETH-I) Sets the parity for the COM #2 serial communication port.
PORT #2 STOP BIT (default: 1) (only for Z-KEY-I and Z-KEY-2ETH-I) Sets the number of stop bits for the COM #2 serial communication port.
PORT# 2 TIMEOUT [ms] (only for Z-KEY-I and Z-KEY-2ETH-I) Sets the wait time before defining fail.
PORT #2 WRITING RETRIES (default: 3) (only for Z-KEY-I and Z-KEY-2ETH-I) Selects the number of writing attempts to be made on a serial slave before returning an error.
PORT #2 MAX READ NUM (only for Z-KEY-I and Z-KEY-2ETH-I) Sets the maximum number of simultaneous reading ModBUS registers of the remote TCP-IP Modbus server, the firmware will use this value to optimize the ModBUS readings.
PORT #2 MAX WRITE NUM (only for Z-KEY-I and Z-KEY-2ETH-I) Sets the maximum number of simultaneous writing ModBUS registers of the serial, the firmware will use this value to optimize the ModBUS writings.
WEB SERVER AUTHENTICATION USER NAME (default: admin) Sets the username to access the webserver.
WEB SERVER PASSWORD (default: admin) Sets the password to access the webserver and to read/write the configuration (if enabled).
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WEB SERVER PORT (default: 80) Sets the communication port for the web server.
IP CHANGE FROM DISCOVERY (default: Enabled) Selects whether or not the device accepts the IP address change from the Seneca Discovery Device software.
TLS (default: Disabled) Enables or disables cryptographic protocols via TLS.
MODBUS TCP-IP CLIENT Enables or not the TCP-IP client Modbus
MODBUS TCP-IP SERVER#1…3 PORT Sets the port for the max 3 remote TCP-IP Modbus servers
MODBUS TCP-IP SERVER#1…3 ADDRESS Sets the IP address for the max 3 remote TCP-IP Modbus servers
MODBUS TCP-IP CLIENT TIMEOUT [ms] Sets the timeout for remote TCP-IP Modbus servers
MODBUS TCP-IP CLIENT WRITING ATTEMPTS Selects the number of writing attempts to be made on a remote TCP-IP Modbus server before returning an error and activating the quarantine.
MODBUS TCP-IP CLIENT MAX READ NUM Sets the maximum number of simultaneous reading ModBUS registers of the remote TCP-IP Modbus server, the firmware will use this value to optimize the ModBUS readings.
MODBUS TCP-IP CLIENT MAX WRITE NUM Sets the maximum number of simultaneous writing ModBUS registers of the remote TCP-IP Modbus server, the firmware will use this value to optimize the ModBUS writings.
SERVER AFTER FAIL DELAY Sets the number of quarantine seconds after a tag has been declared in fail (i.e. these tags are no longer considered) before being interrogated again.
STOP MODBUS READING WHEN NO IEC61850 CONNECTION If active, it allows to stop the modbus communication when the communication with the IEC61850 client is lost. This allows to trigger any timeouts present in the modbus slave/server devices. SYNC CLOCK WITH TIME INTERNET
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Allows you to enable date/time updating via connection to NTP servers (RFC 5905).
ATTENTION!
AT EACH RESTART THE DEVICE MUST BE ABLE TO RETRIEVE THE DATE/TIME FROM AN NTP SERVER OTHERWISE THIS WILL BE SET TO 1/1/1970 0:00
NTP SERVER 1 ADDRESS This is the IP address of the first NTP server (for example 193.204.114.232 for INRIM’s NTP)
NTP SERVER 2 ADDRESS This is the IP address of the second NTP server (in case the first one does not respond)
GMT Sets the offset from Greenwich Mean Time (for example for Italy GMT=+1 when daylight saving time is not in effect)
IEC MODEL NAME Sets the model name for the IEC protocol
IEC DEVICE NAME Sets the device name for the IEC protocol
IEC61850 SERVER TCP/IP PORT Sets the TCP-IP communication port of the IEC61850 protocol
In addition, a configuration can be exported / imported via the webserver.
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10.1.4.3.1. SAVING A CONFIGURATION ON A FILE A configuration that includes: CONFIGURATION TAGS/COMMANDS It can be saved to a file this way: Go to the Setup section and select the file to save, press the “Save config” button
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10.1.4.3.2. IMPORTING A CONFIGURATION FROM A FILE A configuration that includes: CONFIGURATION TAGS/COMMANDS It can be imported from a file this way: Go to the Setup section and select the file to load, press the “Load config” button
10.1.4.4. “SETUP COMMANDS/TAGS” SECTION
In this section you can add, edit or delete a Modbus command.
Using the ADD button you can add a new command. Using the CLONE button it is possible to clone a command. Using the DEL button it is possible to delete an existing command.
MNEMONIC NAME It is the identifying name of the command
TARGET MODBUS DEVICE It represents the Seneca Modbus device selected from those available in the database. In the case of a non-Seneca device or for advanced configurations, select CUSTOM.
TARGET RESOURCE It represents the Seneca device variable you want to add.
TARGET CONNECTED TO It selects the serial to be used for Modbus serial communication for the specified TAG.
TARGET MODBUS STATION ADDRESS It selects the station address to use for the command.
TARGET MODBUS START REGISTER It represents the starting Modbus address of the command (in the case of a Seneca device it is filled in automatically).
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TARGET MODBUS REQUEST TYPE It represents the type of Modbus command to use (Read Holding Register, Coil etc.). In the case of a Seneca device it is filled in automatically.
TARGET REGISTER DATA LENGTH Allows you to set how many Modbus registers are required in the command.
TARGET MODBUS WRITE PERIODIC TRIGGER [ms] Represents the time interval of execution of the command
ENDIAN SWAP Allows you to swap a register read by Modbus, i.e.: NONE: no swap BYTE: shifts the high byte with low byte (for example Modbus reading 0xAABB will be converted to 0xBBAA) WORD: In the case of a data type greater than a Modbus register (e.g. single precision Floating Point registers) it allows you to set which word (register) to use as the most significant part, for example: Register 1 = 0xAABB Register 2 = 0xCCDD will become a single value 0xAABBCCDD if the parameter is NONE, otherwise 0xCCDDAABB if this parameter is active BYTE AND WORD: as in the previous case but there will also be a byte swap, for example: Register 1 = 0xAABB Register 2 = 0xCCDD Will become 0xDDCCBBAA
10.1.4.5. “I/O MAPPING” SECTION
Allows you to move the contents of the bytes of the read and write buffers.
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10.1.4.1. “SETUP IEC VARIABLES” SECTION Allows you to define an IEC variable from the read or write buffer
MNEMONIC NAME This is the name of the variable that will appear in the IEC61850 client
READ/WRITE Selects whether the variable should be created from the read or write buffer
DATA TYPE Represents the data type of the variable, the device can also convert the data type on the IEC61850 protocol: BIT (SPS )-> 1 bit buffer size INT16 TO INT32 (INS) -> 2 byte buffer size (converted to 4 bytes in the IEC61850 protocol) UINT16 TO INT32 (INS) -> 2 byte buffer size (converted to 4 bytes in the IEC61850 protocol) INT32 (INS) -> 4 byte buffer size INT16 TO FLOAT32 (MV)-> 2 byte buffer size (converted to 4 bytes in the IEC61850 protocol) UINT16 TO FLOAT32 (MV)-> 2 byte buffer size (converted to 4 bytes in the IEC61850 protocol) INT32 TO FLOAT32 (MV)-> 4 byte buffer size FLOAT 32 (MV)-> 4 byte buffer size
BYTE OFFSET Represents the starting byte of the read or write buffer variable. The amount of bytes to use is defined by the data type
SCALE FACTOR It is the floating point coefficient that multiplies the Modbus value (for example, if you set 0.1, the Modbus reading of 10 will be converted to 1 on IEC61850).
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10.1.4.1. “SETUP IEC DATASET” SECTION Allows you to set datasets by selecting the variables to enter. CONNECTED TO LOGICAL NODE Represents the logical node to which the Dataset is connected MNEMONIC NAME Represents the name of the Dataset Then select the variables to associate:
IEC 61850 MODBUS GATEWAYS
10.1.4.2. “SETUP IEC REPORT CONTROL BLOCK” SECTION
Allows you to set the configuration of the Report Control Blocks and of the relevant Dataset.
CONNECTED TO LOGICAL NODE Specifies the Logical Node (LN) to which the RCB is associated. Typical values: LLN0 (Logical Node zero, the root node of the device instance).
MNEMONIC NAME Mnemonic name of the RCB block, used as an identifying reference. Example: RCB
REPORT ID Unique identifier of the submitted report, used by the client to distinguish report sources. Example: rpt_name
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BUFFERED Indicates whether the report is buffered (YES) or unbuffered (NO). Buffered: Reports are temporarily stored if the client is unavailable. Unbuffered: Reports are sent only if the client is connected.
DATA SET Selection of the DataSet containing the references to the data that will be included in the reports. Values: Default list of available DataSets.
CONFIGURATION REVISION Revision number of the report configuration. Increased each time the dataset content changes. Purpose: Ensure that clients and servers are in sync.
BUFFER TIME (ms) Minimum delay between two successive reports, even if multiple events occur. Unit: milliseconds. Example: 1000 (1 second)
INTEGRITY PERIOD (ms) Integrity period: forced sending of the report even if there are no changes. Unit: milliseconds. Example: 600000 (10 minutes)
Trigger Options They determine the conditions that cause a report to be sent: DATA CHANGE: the report is sent when the value of a data changes. QUALITY CHANGE: the report is sent if the quality changes (e.g. ‘good’, ‘invalid’). DATA UPDATE: The report is sent when the data is updated, even if it does not change. PERIOD: report sent periodically, according to the Integrity Period. GENERAL INTERROGATION: allows the client to request immediate sending of a report.
Optional Fields These are optional fields included in the reports, useful for improving traceability and diagnostics: SEQUENCE NUMBER: report progressive number. TIME STAMP: time and date of the event or update. REASON FOR INCLUSION: reason for the report trigger (e.g. data change, GI…). DATA SET NAME: name of the included DataSet. DATA ATTRIBUTE REFERENCE: complete data references (e.g. LD0/MMXU1.Vol.instMag.i). BUFFER OVERFLOW: indicates whether data was lost due to buffer overflow. ENTRY ID: unique identifier of the event within the buffer. CONFIGURATION REVISION: version of the configuration used at the time of the report.
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10.1.4.1. “FIRMWARE UPDATE” SECTION
In order to improve, add, optimize the functions of the product, Seneca releases firmware updates on the device section on the www.seneca.it website
ATTENTION! NOT TO DAMAGE THE DEVICE DO NOT REMOVE THE POWER SUPPLY DURING THE FIRMWARE
UPDATE OPERATION.
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10.1.4.1. “CERTIFICATE SETUP” SECTION
This section allows you to send or delete a certificate and/or the private key of the device. Up to 5 certificates are supported for clients. The used format is PEM.
10.1.4.2. SERIAL “SERIAL TRAFFIC MONITOR” Allows you to view the serial packets that are in transit.
10.1.4.1. LOCAL TIME SETUP
This allows you to set the date/time manually.
ATTENTION!
IF AN NTP SERVER IS NOT SET, THE DEVICE WILL HAVE THE DATE/TIME 1/1/1970 0:00 WHEN IT RESTARTS
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SUPPORTED MODBUS COMMUNICATION PROTOCOLS
The Modbus communication protocols supported are:
Modbus RTU/ASCII master (from #1 and #2 serial ports) Modbus RTU/ASCII slave (from #1 and #2 serial ports) Modbus TCP-IP Client (from the Ethernet port) up to 3 remote TCP-IP Modbus Servers
For more information on these protocols, see the website: http://www.modbus.org/specs.php.
SUPPORTED MODBUS FUNCTION CODES
The following Modbus functions are supported:
Read Coils Read Discrete Inputs Read Holding Registers Read Input Registers Write Single Coil Write Single Register Write multiple Coils Write Multiple Registers
(function 1) (function 2) (function 3) (function 4)
(function 5) (function 6)
(function 15) (function 16)
ATTENTION! All 32-bit variables are contained in 2 consecutive Modbus registers All 64-bit variables are contained in 4 consecutive Modbus registers
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RESETTING THE DEVICE TO ITS FACTORY CONFIGURATION
The factory configuration resets all parameters to default.
To reset the device to the factory configuration it is necessary to follow the procedure below:
Z-KEY-I / Z-KEY-2ETH-I:
1) Remove power from the device 2) Turn dip switches 1 and 2 to ON 3) Power up the device and wait at least 10 seconds 4) Remove power from the device 5) Turn dip switches 1 and 2 to OFF 6) At the next restart the device will have loaded the factory configuration
R-KEY-LT-I:
1) Remove power from the device 2) Set dip switches 1 and 2 of SW2 to ON 3) Power up the device and wait at least 10 seconds 4) Remove power from the device 5) Turn 2 SW2 dip switches to OFF. 6) At the next restart the device will have loaded the factory configuration
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INFORMATION ABOUT MODBUS REGISTERS
The following abbreviations are used in the following chapter:
MS LS MSBIT LSBIT MMSW MSW LSW LLSW RO
RW*
RW**
UNSIGNED 16 BIT SIGNED 16 BIT UNSIGNED 32 BIT SIGNED 32 BIT UNSIGNED 64 BIT SIGNED 64 BIT
FLOAT 32 BIT
BIT
Most Significant Least Significant Most Significant Bit Least Significant Bit “Most” Most Significant Word (16bit) Most Significant Word (16bit) Least Significant Word (16bit) “Least” Least Significant Word (16bit) Read Only Read-Write: REGISTERS CONTAINED IN FLASH MEMORY: WRITABLE ABOUT 10,000 TIMES MAXIMUM Read-Write: REGISTERS THAT CAN BE WRITTEN ONLY AFTER WRITING THE COMMAND “ENABLE WRITE CUSTOM ENERGIES = 49616” Unsigned integer register that can assume values from 0 to 65535 Signed integer register that can take values from -32768 to +32767 Unsigned integer register that can assume values from 0 to 4294967296 Signed integer register that can take values from -2147483648 to 2147483647 Unsigned integer register that can assume values from 0 to 18446744073709551615 Signed integer register that can assume values from -2^63 to 2^63-1 32-bit, single-precision floating-point register (IEEE 754) https://en.wikipedia.org/wiki/IEEE_754 Boolean register, which can take the values 0 (false) or 1 (true)
NUMBERING OF “0-BASED” OR “1-BASED” MODBUS ADDRESSES
According to the Modbus standard the Holding Registers are addressable from 0 to 65535, there are 2 different conventions for numbering the addresses: “0-BASED” and “1-BASED”. For greater clarity, Seneca shows its register tables in both conventions.
ATTENTION!
carefully read the documentation of the Modbus Master DEVICE IN ORDER to understand which of the TWO conventions the manufacturer has decided to use.
SENECA USES THE “1 BASED” CONVENTION FOR ITS PRODUCTS
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NUMBERING OF MODBUS ADDRESSES WITH “0-BASED” CONVENTION
The numbering is:
HOLDING REGISTER MODBUS ADDRESS (OFFSET) 0 1 2 3 4
MEANING
FIRST REGISTER SECOND REGISTER THIRD REGISTER FOURTH REGISTER FIFTH REGISTER
Therefore, the first register is at address 0. In the following tables, this convention is indicated with “ADDRESS OFFSET”.
NUMBERING OF MODBUS ADDRESSES WITH “1 BASED” CONVENTION (STANDARD) The numbering is that established by the Modbus consortium and is of the type:
HOLDING REGISTER MODBUS ADDRESS 4x 40001 40002 40003 40004 40005
MEANING
FIRST REGISTER SECOND REGISTER THIRD REGISTER FOURTH REGISTER FIFTH REGISTER
This convention is indicated with “ADDRESS 4x” since a 40000 is added to the address so that the first Modbus register is 40001. A further convention is also possible where the number 4 is omitted in front of the register address:
HOLDING MODBUS ADDRESS WITHOUT 4x 1 2 3 4 5
MEANING
FIRST REGISTER SECOND REGISTER THIRD REGISTER FOURTH REGISTER FIFTH REGISTER
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BIT CONVENTION WITHIN A MODBUS HOLDING REGISTER
A Modbus Holding Register consists of 16 bits with the following convention:
BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
For instance, if the value of the register in decimal is 12300 the value 12300 in hexadecimal is: 0x300C
the hexadecimal 0x300C in binary value is: 11 0000 0000 1100
So, using the above convention, we get:
BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0
MSB and LSB BYTE CONVENTION WITHIN A MODBUS HOLDING REGISTER
A Modbus Holding Register consists of 16 bits with the following convention:
BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LSB Byte (Least Significant Byte) defines the 8 bits ranging from Bit 0 to Bit 7 included, we define MSB Byte (Most Significant Byte) the 8 bits ranging from Bit 8 to Bit 15 inclusive:
BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
BYTE MSB
BYTE LSB
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REPRESENTATION OF A 32-BIT VALUE IN TWO CONSECUTIVE MODBUS HOLDING REGISTERS
The representation of a 32-bit value in the Modbus Holding Registers is made using 2 consecutive Holding Registers (a Holding Register is a 16-bit register). To obtain the 32-bit value it is therefore necessary to read two consecutive registers: For example, if register 40064 contains the 16 most significant bits (MSW) while register 40065 contains the least significant 16 bits (LSW), the 32-bit value is obtained by composing the 2 registers:
BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 40064 MOST SIGNIFICANT WORD
BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 40065 LEAST SIGNIFICANT WORD
32 = + ( 65536)
In the reading registers it is possible to swap the most significant word with the least significant word, therefore it is possible to obtain 40064 as LSW and 40065 as MSW.
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TYPE OF 32-BIT FLOATING POINT DATA (IEEE 754)
The IEEE 754 standard (https://en.wikipedia.org/wiki/IEEE_754) defines the format for representing floating point numbers. As already mentioned, since it is a 32-bit data type, its representation occupies two 16-bit holding registers. To obtain a binary/hexadecimal conversion of a floating point value it is possible to refer to an online converter at this address:
http://www.h-schmidt.net/FloatConverter/IEEE754.html
Using the last representation the value 2.54 is represented at 32 bits as: 0x4022 8F5C Since we have 16-bit registers available, the value must be divided into MSW and LSW: 0x4022 (16418 decimal) are the 16 most significant bits (MSW) while 0x8F5C (36700 decimal) are the 16 least significant bits (LSW).
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Documents / Resources
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SENECA Z-KEY-2ETH-I Protocol Converter [pdf] User Manual Z-KEY-2ETH-I Protocol Converter, Z-KEY-2ETH-I, Protocol Converter, Converter |