ME31-XDXX0400 4-way temperature acquisition module PT100 thermal resistor RS485 network port to Modbus K-type thermocouple
[Communication interface]：RJ45, RS485
[Working voltage]：DC 8~28V
[Installation method]：Guide rail/screw
[Introduction]：ME31-XDXX0400 is a PT100 thermal resistor temperature acquisition module with 4-channel PT100 temperature acquisition function, and supports the acquisition of 2/3-wire PT100 temperature sensors. The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity, and Anti-Salt Spray.It also has a display screen to facilitate customers to debug and configure on-site and view the temperature. This temperature acquisition module supports both network and RS485 communication interfaces, and supports Modbus TCP protocol or Modbus RTU protocol for acquisition. supporting Modbus TCP and Modbus RTU protocol conversion, and convenient for expanding Modbus slave devices.
| Serial number | Label | Description |
| 1 | TX（LED） | Serial port data sending indicator |
| 2 | RX（LED） | Serial port receiving data indicator |
| 3 | LINK（LED） | Network connection indicator |
| 4 | NET（LED） | Network data receiving and sending indicator |
| 5 | PWR（LED） | Power input indicator |
| 6 | ON | Ground, 5.08mm terminal. |
| 7 | CH1+ | The first PT100 temperature acquisition channel, 3-wire PT100+ input, 5.08mm terminal. |
| 8 | CH1- | The first PT100 temperature acquisition channel, 3-wire PT100- input, when connected to a 2-wire PT100, short-circuit the CH1- and COM1 terminals, 5.08mm terminal. |
| 9 | COM1 | The first PT100 temperature acquisition channel, the common terminal of the 3-wire PT100, when connected to the 2-wire PT100, short-circuit the CH1- and COM1 terminals, 5.08mm terminal. |
| 10 | CH２+ | The second PT100 temperature acquisition channel, 3-wire PT100+ input, 5.08mm terminal. |
| 11 | CH２- | The second PT100 temperature acquisition channel, 3-wire PT100- input, when connected to 2-wire PT100, short-circuit the CH2- and COM2 terminals, 5.08mm terminal. |
| 12 | COM２ | The second PT100 temperature acquisition channel, 3-wire PT100 common terminal, when connected to 2-wire PT100, short-circuit CH2- and COM2 terminals, 5.08mm terminal. |
| 13 | CH3+ | The third PT100 temperature acquisition channel, 3-wire PT100+ input, 5.08mm terminal. |
| 14 | CH3- | The third PT100 temperature acquisition channel, 3-wire PT100- input, when connected to 2-wire PT100, short-circuit the CH3- and COM3 terminals, 5.08mm terminal. |
| 15 | COM３ | The third PT100 temperature acquisition channel, the common terminal of the 3-wire PT100, when connected to the 2-wire PT100, short-circuit the CH3- and COM3 terminals, 5.08mm terminal. |
| 16 | Ethernet | Ethernet interface, standard RJ45 interface. |
| 17 | CH４+ | The 4th PT100 temperature acquisition channel, 3-wire PT100+ input, 5.08mm terminal. |
| 18 | CH４- | The 4th PT100 temperature acquisition channel, 3-wire PT100- input, when connected to 2-wire PT100, short-circuit the CH4- and COM4 terminals, 5.08mm terminal. |
| 19 | COM４ | The 4th PT100 temperature acquisition channel, 3-wire PT100 common terminal, when connected to 2-wire PT100, short-circuit the CH4- and COM4 terminals, 5.08mm terminal. |
| 20 | 485-A | The A of the serial port is connected to the A interface of the external device, 5.08mm terminal. |
| 21 | 485-B | The B port of the serial port is connected to the B port of the external device, 5.08mm terminal. |
| 22 | V- | Negative pole of power input terminal, DC 8V~28V, 5.08mm terminal. |
| 23 | V+ | Positive power input terminal, DC 8V~28V, 5.08mm terminal. |
| No. | Label | Description |
| 1 | TX（LED） | Serial port data transmission indicator |
| 2 | RX（LED） | Serial port data reception indicator |
| 3 | LINK（LED） | Network connection indicator |
| 4 | NET（LED） | Network data transmission and reception indicator |
| 5 | PWR（LED） | Power input indicator |
| 6 | PE | Ground, 5.08mm Phoenix terminal. |
| 7 | CH1+ | The first PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to 2-wire PT100, short the two CH1+ terminals, 5.08mm Phoenix terminal. |
| 8 | CH1+ | The first PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to 2-wire PT100, short the two CH1+ terminals, 5.08mm Phoenix terminal. |
| 9 | CH1- | The first PT100 temperature acquisition channel, 3-wire PT100 negative input, 5.08mm Phoenix terminal. |
| 10 | CH2+ | The second PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to a 2-wire PT100, short the two CH2+ terminals, 5.08mm Phoenix terminal. |
| 11 | CH2+ | The second PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to a 2-wire PT100, short the two CH2+ terminals, 5.08mm Phoenix terminal. |
| 12 | CH2- | The second PT100 temperature acquisition channel, 3-wire PT100 negative input, 5.08mm Phoenix terminal. |
| 13 | CH3+ | The third PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to a 2-wire PT100, short the two CH3+ terminals, 5.08mm Phoenix terminal. |
| 14 | CH3+ | The third PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to a 2-wire PT100, short the two CH3+ terminals, 5.08mm Phoenix terminal. |
| 15 | CH3- | The third PT100 temperature acquisition channel, 3-wire PT100 negative input, 5.08mm Phoenix terminal. |
| 16 | Ethernet | Ethernet interface, standard RJ45 interface. |
| 17 | CH4+ | The fourth PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to a 2-wire PT100, short the two CH4+ terminals, 5.08mm Phoenix terminal. |
| 18 | CH4+ | The fourth PT100 temperature acquisition channel, 3-wire PT100 positive input, when connected to a 2-wire PT100, short the two CH4+ terminals, 5.08mm Phoenix terminal. |
| 19 | CH4- | The 4th PT100 temperature acquisition channel, 3-wire PT100 negative input, 5.08mm Phoenix terminal. |
| 20 | 485-A | The A of the serial port is connected to the A interface of the external device, 5.08mm Phoenix terminal. |
| 21 | 485-B | The B of the serial port is connected to the B interface of the external device, 5.08mm Phoenix terminal. |
| 22 | V- | The negative pole of the power input terminal, DC 8V~28V, 5.08mm Phoenix terminal. |
| 23 | V+ | The positive pole of the power input terminal, DC 8V~28V, 5.08mm Phoenix terminal. |