EX9043D MODBUS I-O Expansion Module
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Product Specifications:
- Model: RT-EX-9043D
- Version: 2.03
- Digital Outputs: 15
- Communication Protocol: MODBUS
- Transmission Line Standard: EIA RS-485
Product Usage Instructions:
Wire Connections:
Refer to the pin assignment table for correct wiring to external
devices or sensors.
Default Settings:
- Baud Rate: 9600
- Data Bits: 8
- Parity: None
- Stop Bit: 1
- Device Address: 1
LED Indicators:
The EX9043D has a system LED for power status and LEDs for each
output state.
| Name | System | Outputs |
|---|---|---|
| Description | Power on | Output is HIGH* |
| Description | Power off | Output is LOW* |
INIT Operation (Configuration mode):
The module has an EEPROM to store configuration information. To
change or reset the configuration, use the INIT mode.
Frequently Asked Questions (FAQ):
Q: How many digital outputs does the RT-EX-9043D support?
A: The RT-EX-9043D supports 15 digital outputs.
Q: What communication protocol does the RT-EX-9043D use?
A: The RT-EX-9043D uses the MODBUS communication protocol.
Q: How can I reset the configuration of the RT-EX-9043D?
A: You can reset the configuration by using the INIT mode as
described in the manual.
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Technical Manual for RT-EX-9043D
Version 2.03
15 x Digital Output
Technical Manual, RT-EX-9043D, v2.03
Introduction
The EX9043D MODBUS I/O Expansion module is a high-quality and low-cost add-on data acquisition device that allows expanding the on-board digital output capabilities on X32-based RTCU units almost indefinitely and completely transparent using MODBUS communication protocol.
The EX9043D uses EIA RS-485 – the industry’s most widely used bi-directional, balanced transmission line standard. It lets the module transmit and receive data at high data rates over long distances.
The EX9043D can be used to expand the RTCU with additional 15 digital outputs.
The EX9043D works in a variety of environments and applications, including:
1. Factory automation and control 2. SCADA applications 3. HVAC applications 4. Remote measuring, monitoring and control 5. Security and alarm systems, etc.
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Technical Manual, RT-EX-9043D, v2.03
Table of Contents
Introduction………………………………………………………………………………………………………………………………….2 Table of Contents………………………………………………………………………………………………………………………….3 Graphical view……………………………………………………………………………………………………………………………..3 Pin Assignment…………………………………………………………………………………………………………………………….3
Default Settings ………………………………………………………………………………………………………………………..5 LED Indicator …………………………………………………………………………………………………………………………..5 INIT Operation (Configuration mode) …………………………………………………………………………………………….6 Wire Connections …………………………………………………………………………………………………………………………7 Digital Outputs: ………………………………………………………………………………………………………………………..7 Technical Specifications ………………………………………………………………………………………………………………..7 Appendix A Using the module as I/O extension in the RTCU IDE…………………………………………………..8
Graphical view
Pin Assignment
The 2 x 10-pins plug-terminals as seen in the following figure allow connecting supply, communication lines and digital outputs. The following table shows pin names and their function.
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Technical Manual, RT-EX-9043D, v2.03
Pin Name
1
DO10
2
DO11
3
DO12
4
DO13
5
DO14
6
INIT*
7
(Y) DATA+
8
(G) DATA-
9
(R) +VS
10 (B) GND
11 DO0
12 DO1
13 DO2
14 DO3
15 DO4
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Description
Digital output 10 Digital output 11 Digital output 12 Digital output 13 Digital output 14 Pin for initialization of the configuration routine RS485+ data signal RS485- data signal (+) Supply. Please refer to the specification for correct voltage level Supply ground Digital output 0 Digital output 1 Digital output 2 Digital output 3 Digital output 4
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Technical Manual, RT-EX-9043D, v2.03
Pin Name
Description
16 DO5
Digital output 5
17 DO6
Digital output 6
18 DO7
Digital output 7
19 DO8
Digital output 8
20 DO9
Digital output 9
Please refer to the section “Wire Connections” for correct wiring to the external device/sensor.
Default Settings
Name Baud rate Data bits Parity Stop bit Device address
Description 9600 8 None 1 1
These settings can easily be changed in RTCU IDE. Please refer to “Appendix A Using the module as I/O extension in the RTCU IDE” for details.
LED Indicator
The EX9043D is provided with a system LED to indicate power status, and LEDs to indicate state of their respective outputs. In the following table description of the different states of the LEDs can be found:
Name System
Outputs
Pattern ON OFF ON OFF
Description Power on Power off Output is HIGH* Output is LOW*
*Please refer to the wiring scheme for correct indication
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Technical Manual, RT-EX-9043D, v2.03
INIT Operation (Configuration mode)
The module has a build-in EEPROM to store configuration information such as address, type, baud rate and other information. Sometimes a user may forget the configuration of the module, or simply need to change it. Therefore, the module has a special mode named “INIT mode” to allow the system to change the configuration.
Initially, the INIT mode was accessed by connecting the INIT* pin terminal to the GND terminal. The new modules have the INIT* switch located on the rear side of the module to allow easier access to the INIT* mode. For these modules, INIT*mode is accessed by sliding the INIT* switch to the Init position as shown below:
To enable INIT mode, please follow these steps:
6. Power off the module. 7. Connect the INIT* pin (pin 6) to the GND pin (or slide the INIT* switch to the INIT* ON
position). 8. Power on the module.
The module is now ready to be configured. When the module is configured, remove the power and remove the connection between the INIT* pin (pin 6) and the GND pin (or slide the INIT* switch to Normal position), and then reapply the power to the module.
When using the RTCU IDE to change the setting, select “setup module” from the right-click menu of the node in “I/O Extension” tree, and a guide will go through each step of the configuration process. Please refer to the RTCU IDE on-line help for further information.
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Technical Manual, RT-EX-9043D, v2.03
Wire Connections
Digital Outputs:
When connecting a device to the digital outputs please follow the wiring scheme below:
DO14
Please note that when connecting inductive load to the digital outputs a diode needed to prevent counter EMF.
Technical Specifications
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Technical Manual, RT-EX-9043D, v2.03
Appendix A Using the module as I/O extension in the RTCU IDE
To be able to use the MODBUS I/O Expansion module as an I/O extension, the RTCU IDE project needs to be configured correctly, by entering the correct parameters for the expansion module into the “I/O Extension device” dialog1.
The following figure shows the correct setting for an EX9043 connected to the RS485_1 port on a RTCU DX4 with default settings:
Default value
Based on RTCU
Default values
Must match these values
To change the above mentioned default values, new values must be entered and transferred to the module2.
Values in the “I/O Extension net” must be set according to communication between the module and the RTCU unit, the port numeration follows the principles of the serOpen function, which is described in the IDE online help. When changing baud, data bit(s), parity or stop bit(s) all units on the net must be reconfigured3.
The address field is per default “1”; if more modules are connected to same net each must have a unique address. Changing the address of a module is done, by selecting the new value and then reconfigure the module.
A close attention must be paid to the Count, Index in the Digital Outputs section, which must be 15 and 0 respectively, else will communication with the module fail. Optional all writings can be inverted by selecting “Negate”.
1 Please refer to the RTCU IDE online help for creating and editing I/O extension 2 Please see “Project Control – I/O Extension” in the IDE online help. 3 To reconfigure: right click the device in the IDE and select “setup module”, and then follow the guide.
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Documents / Resources
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logic io EX9043D MODBUS I-O Expansion Module [pdf] Instruction Manual RT-EX-9043D, EX9043D MODBUS I-O Expansion Module, MODBUS I-O Expansion Module, Expansion Module, Module |