3S-MT-PT1000
Module Temperature Sensor
USER MANUAL
Introduction
Module Temperature Sensor is a product of the SEVEN meteorological sensors series, which consists of professional and intelligent measurement sensors with digital interface for environmental and industrial applications. 4 types of module temperature sensors are available. The product list with item codes is given in Table 1.
| Type | Item Code | Name | Usage Area | Output |
| 1 | 3S-MT-PT1000-MB | Module Temperature Sensor-PT1000 with Modbus RTU Output | Module | Modbus RTU |
| 2 | 3S-MT-PT1000-U | Module Temperature Sensor-PT1000 with 0-10V Output | Module | Analog 0-10 V |
| 3 | 3S-MT-PT1000-I | Module Temperature Sensor-PT1000 with 4-20mA Output | Module | Analog 4-20 mA |
| 4 | 3S-MT-PT1000 | Module Temperature Sensor-PT1000 | Module | PT1000 |
For products with Modbus output, measured module temperature data is transmitted to data loggers and receiving units via a 2-wire RS485 bus with Modbus RTU protocol, while devices with analog output transmit data as 4-20mA or 0-10 V.
Module Temperature Sensors Installation
It is suggested that the system be operated at ground level to make sure that all components are working properly prior to installation. A general diagram of the progress of the installation steps is given below.
Note: SEVEN has the right to make modifications on this documentation without notice.
2.1. Unpacking and Control
Upon receipt of the product, it must be carefully checked whether the package content is complete. SEVEN Sensor Solutions must be contacted if any of the components are missing, damaged or defective.
2.2. Site Requirements and Considerations
Each site is different and has its own unique challenges. For this reason, the installation of the product may differ in each site. First of all, it should be decided where the product will be installed. Module Temperature can be affected by obstructions, shading source and local topography.
The Module Temperature Sensor must be installed at the exact midpoint of the PV module. A sensor location should be chosen in the center of the cell closest to the exact midpoint of the module, avoiding the boundaries between cells.
The area where the Module Temperature Sensor will be installed must be completely dry and clean. Dew residues on the PV modules during the winter months may prevent the Module Temperature Sensor from sticking.
Note: To facilitate sensor maintenance, it should be installed in an easily accessible location, especially in roof projects.
2.3. Installation
Step 1- The area where the module temperature sensor will be adhered to the back of the PV module is determined.
Step 2- The area to be adhered to is thoroughly cleaned and dried.
Step 3- The adhesive protection on the module temperature sensor is removed, and it is adhered to the designated area.
Step 4- After the sensor is installed, its cable should be fixed to the back of the panel with the self-adhesive cable clips and clamps provided in the package by SEVEN Sensor
Note: The adhesive used in the area where the Panel Temperature Sensor is bonded to the PV Panel is a special adhesive that enables heat conduction. If this adhesive is damaged, it can be requested by contacting Seven Sensor.
2.4. Inspection and Maintenance
Sensors and electrical enclosures should be periodically checked for damage, deterioration or disconnection, evidence of moisture or vermin in the enclosures, loose wiring, disconnection of temperature sensors, brittle joints and other potential problems.
According to IEC 61724-1:2021, the monitoring system should be inspected at least annually and preferably at more frequent intervals.
Connections
The sensor box has waterproof and UV-resistant connectors. The minimum bending radius of the cables is 5 mm.
The supply voltage for Modbus and Analog models of Module Temperature Sensors is 12-30 V DC. The recommended supply voltage is 24 V DC.
The Module Temperature Sensors with Modbus RTU Output have an electrically isolated, half-duplex, 2-wire RS485 interface for configuration, communication and firmware update.
The communication and power cable of the Module Temperature Sensors must always be laid separately from the AC/ DC cables.
Note: The installation and electrical connections of SEVEN sensors should be carried out by a qualified electrician.
| 3S-MT-PT1000-MB | |
| RS485 A / Data (+) | Green |
| RS485 B / Data (-) | Yellow |
| RS485 Data Ground | Pink |
| Power Supply (+) | Brown |
| Power Supply (-) | White |
| Earth Ground | Black |
| 3S-MT-PT1000-I | |
| 4…20 mA Current (I+) | Green |
| 4…20 mA Current (I-) | Yellow |
| Power Supply (+) | Brown |
| Power Supply (-) | White |
| 3S-MT-PT1000-U | |
| 0-10 V (+) | Green |
| 0-10 V (-) | Yellow |
| Power Supply (+) | Brown |
| Power Supply (-) | White |
3S-MC-M-PT1000_v2.1 Configuration and Communication
Once the Module Temperature Sensor is installed and connected correctly, the sensor begins autonomously to take measurements.
Attention must be paid to the following points:
- A measurement request should be made to the Module Temperature Sensor with the 3S Configuration Tool and it should be checked whether it correctly operates in the site.
- If several Modbus Devices are operated on a network, a unique device ID must be assigned to each device.
Follow SEVEN instructions to configure the Temperature Sensor on dataloggers.
4.1. 3S-MC-MT-PT1000 Configuration Tool
3S-MC-MT-PT1000 Configuration Tool is a software tool for testing communication and adjusting Modbus parameters of the Module Temperature Sensor with Modbus RTU Output (3S-MT-PT1000-MB).
A Windows® PC with a serial bus interface set as a serial COM port, 3S-MC-M-PT1000 Configuration Tool software, and USB to RS485 Converter are required for configuration and testing purposes.
Follow the instructions in 3S-MC-M-PT1000 Configuration Tool User Manual: https://www.sevensensor.com/files/d/en/3S-PT1000_Configuration_Tool_v2.1.pdf
4.2. Modbus RTU Specifications
4.2.1. Supported Bus Protocol
The 3S-MT-PT1000-MB is equipped with an RS-485 communication port that supports Modbus RTU commands.
The Temperature Sensor can be configured to operate in different communication parameters. The table that follows describes each supported bus protocol.
| Baud Rate | 4800, 9600, 19200, 38400 |
| Parity | None |
| Stop Bit | 1, 2 |
| Factory Default | 9600 Baud, 8N1, Address:1 |
4.2.2. Supported Function Codes
The Temperature Sensor supports a specific subset of Modbus RTU commands. The table that follows lists each supported function code.
| 0x03 | Read Holding Registers |
| 0x04 | Read Input Registers |
| 0x46 | Read & Change Parameters |
| 0x08 | Diagnostics |
Note: All checksums of the Modbus protocol are omitted in this document. These checksums must always be calculated and sent during communication.
4.2.2.1 Read Holding Registers (0x03)
Master Request:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x03 |
| Start Register | 2 Byte (Big Endian) | see the register table below |
| Number of Registers | 2 Byte (Big Endian) | see the register table below |
Slave Response:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x03 |
| Number of Bytes | 1 Byte | 0 to 255 (2xN) N = Number of Registers |
| Data | 2 Byte x N (Big Endian) | see the register table below |
Holding Register Map
The Module Temperature Sensor holding register map is based on the “SunSpec Alliance” communication standards.
All data marked in bold below are defined for the Module Temperature Sensor.
| Start | End | Value | Type | Units | Scale Factor | Constant |
| 40000 | 40001 | SunSpec ID | uint32 | N/A | N/A | “SunS” |
| 40002 | 40002 | SunSpec Device ID | uint16 | N/A | N/A | 0x0001 |
| 40003 | 40003 | SunSpec Length | uint16 | Registers | N/A | 65 |
| 40004 | 40019 | Manufacturer | String (32) | N/A | N/A | “SevenSensor” |
| 40020 | 40035 | Model | String (32) | N/A | N/A | “3S-MT-PT1000-MB” |
| 40036 | 40043 | Hardware Version | String (16) | N/A | N/A | ” HW4 “ |
| 40044 | 40051 | Software Version | String (16) | N/A | N/A | ” SW2 “ |
| 40052 | 40067 | Serial Number | String (32) | N/A | N/A | “23.12.345.65.0013” |
| 40068 | 40068 | Device ID | uint16 | N/A | N/A | 1 |
| Back of Module Temperature Registers | ||||||
| 40089 | 40089 | Block ID | int16 | N/A | N/A | 303 |
| 40090 | 40090 | Length | int16 | Registers | N/A | 9 |
| 40091 | 40091 | Effective Module Temp | int16 | °C | 0.1 | Measured |
| 40092 | 40092 | Module Temp 1 | int16 | °C | 0.1 | Measured |
| End of Block Registers | ||||||
| 40107 | 40107 | End of Sunspec Block | uint16 | N/A | N/A | 0xFFFF |
| 40108 | 40108 | Length | uint16 | Registers | 0 | 0 |
| Device Address Read/Write Register | ||||||
| 40109 | 40109 | Modbus ID – Write Register | uint16 | N/A | N/A | 1 |
4.2.2.2. Read Input Registers (0x04)
Master Request:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x04 |
| Start Register | 2 Byte (Big Endian) | see the register table below |
| Number of Registers | 2 Byte (Big Endian) | see the register table below |
Slave Response:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x04 |
| Number of Bytes | 1 Byte | 0 to 255 (2xN) N = Number of Registers |
| Data | 2 Byte x N (Big Endian) | see the register table below |
Input Register Map
The following Modbus data can be read individually or in blocks.
| ID-Dec | ID-Hex | Value | Range | Resolution |
| 30022 | 0x16 | Module Temperature | -40…+85 °C | 0.1°C |
| ID-Dec | ID-Hex | Value | Range |
| 30301 | 0x12D | Hardware Version | |
| 30302 | 0x12E | Software Version | |
| 30342 | 0x156 | Production Year | |
| 30343 | 0x157 | Production Code | Manufacturer Parameters Read Only |
| 30344 | 0x158 | Cell Serial Number | |
| Serial Number | |||
| 30345 | 0x159 | Board Serial Number | |
| 30346 | 0x15A | Box Serial Number | |
| 30347 | 0x15B | Sensor Serial Number | |
4.2.2.3. Read & Change Parameters (0x46)
Sub Function (0x04): Write Device Address
Master Request:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x04 |
| New Address | 1 Byte | 1 to 247 |
Slave Response:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x04 |
| New Address | 1 Byte | 1 to 247 |
Sub Function (0x06): Write Communication Parameters
Master Request:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x04 |
| New Address | 1 Byte | 1 to 247 |
| New Parity / Stop Bit | 1 Byte | 0 to 3, see table below |
Slave Response:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x06 |
| New Baud Rate | 1 Byte | 0 to 3, see table below |
| New Parity / Stop Bit | 1 Byte | 0 to 3, see table below |
Note: When the “Write Communication Parameters” command is used, the “Write Device Address” command must also be used before the restart of communication command.
| Baud Rate | Value | Parity / Stop Bit | Value |
| 4800 | 0 | None/1 | 0 |
| 9600 | 1 | None/2 | 1 |
| 19200 | 2 | Odd | 2 |
| 38400 | 3 | Even | 3 |
Sub Function (0x07): Read Hardware & Software Versions
Master Request:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x07 |
Slave Response:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x07 |
| Hardware Version | 2 Byte (Little Endian) | 0 to 65535 |
| Software Version | 2 Byte (Little Endian) | 0 to 65535 |
Sub Function (0x07): Read Hardware & Software Versions
Master Request:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x08 |
Slave Response:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x46 |
| Sub Function Code | 1 Byte | 0x08 |
| Production Year | 1 Byte | 0 to 99 |
| Production Code | 1 Byte | 0 to 99 |
Slave Response:
| Cell Serial Number | 2 Byte (Little Endian) | 0 to 999 |
| Board Serial Number | 1 Byte | 0 to 99 |
| Box Serial Number | 1 Byte | 0 to 99 |
| Sensor Serial Number | 2 Byte (Big Endian) | 0 to 9999 |
| Production Day | 1 Byte | 1 to 31 |
| Production Month | 1 Byte | 1 to 12 |
| Production Year | 1 Byte | 0 to 99 |
4.2.2.4. Restart Communication Command (0x08)
Master Request:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x08 |
| Restart Code | 4 Byte | 0x00000000 |
Slave Response:
| Address | 1 Byte | 1 to 247 |
| Function Code | 1 Byte | 0x08 |
| Restart Code | 4 Byte | 0x00000000 |
Contact Details
Please feel free to contact us if you face any difficulties during installation or configuration.
Address Pinarcay OSB Mahallesi 11. Cadde, No: 35, Corum Organize Sanayi
Bölgesi: 19200 Merkez/Corum
Phone: +90 530 889 8019
Email: sales@sevensensor.com
Website: www.sevensensor.com
Pinarcay OSB Mahallesi 11. Cadde, No: 35, Corum Organize Sanayi Bolgesi 19200 Merkez / Corum
• Phone: +90 364 230 1233 • Website: www.sevensensor.com • Email: sales@sevensensor.com
Revision 0.0 / Created 26.11.2024
Documents / Resources
 |
SEVEN 3S-MT-PT1000 Temperature Sensor Module [pdf] User Manual 3S-MT-PT1000 Temperature Sensor Module, 3S-MT-PT1000, Temperature Sensor Module, Sensor Module, Module |