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ME31-AAAX2240 Ethernet I/O networking acquisition control module
[Introduction]：ME31-AAAX2240 is equipped with 4 Type A relay outputs and 2analog (0-20mA/4-20mA) inputs, 2 dry contact input detection, supports or Modbus RTU protocol for acquisition and control,and the equipment is also A network I/O networking module that can be used as a simple Modbus gateway (automatically send commands with non-local Modbus addresses through the serial port/network port).
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| Number | Port | Description |
|---|---|---|
| 1 | TX（LED） | UART TX data |
| 2 | RX（LED） | UART RX data |
| 3 | LINK（LED） | Network link |
| 4 | NET（LED） | Network data TX and RX |
| 5 | PWR（LED） | Power input |
| 6 | DO1（LED） | 1st channel relay output |
| 7 | DO2（LED） | 2nd channel relay output |
| 8 | DO3（LED） | 3rd channel relay output |
| 9 | DO4（LED） | 4th channel relay output |
| 10 | V- | Negative pole of power input, DC 8V~28V, 5.08mm phoenix terminal. |
| 11 | V+ | Positive pole of power input, DC 8V~28V, 5.08mm phoenix terminal. |
| 12 | NO1 | Relay 1 normally open pin, used with the common terminal of relay 1 ，5.08mm phoenix terminal |
| 13 | COM1 | Common terminal of relay 1, used in conjunction with the normally open pin of relay 1 ，5.08mm phoenix terminal |
| 14 | NO12 | Relay 2 normally open pin, used with the common terminal of relay 2 ，5.08mm phoenix terminal |
| 15 | COM2 | Common terminal of relay 2, used in conjunction with the normally open pin of relay 2 ，5.08mm phoenix terminal |
| 16 | NO3 | Relay 3 normally open pin, used with the common terminal of relay 3 ，5.08mm phoenix terminal |
| 17 | COM3 | Common terminal of relay 3, used in conjunction with the normally open pin of relay 3 ，5.08mm phoenix terminal |
| 18 | NO4 | Relay 4 normally open pin, used with the common terminal of relay 4 ，5.08mm phoenix terminal |
| 19 | COM4 | Common terminal of relay 4, used in conjunction with the normally open pin of relay 4 ，5.08mm phoenix terminal |
| 20 | Ethernet | Standard RJ45 interface |
| 21 | AI2 | Analog input channel 2, support 0 to 20mA current input，5.08mm phoenix terminal |
| 22 | AI1 | Analog input channel 1, support 0 to 20mA current input，5.08mm phoenix terminal |
| 23 | DI2 | Switch input channel 2, support dry contact access ，5.08mm phoenix terminal |
| 24 | DI1 | Switch input channel 1, support dry contact access ，5.08mm phoenix terminal |
| 25 | GND | Ground |
| 26 | 485-A | A of the RS-485 serial port is connected to the A port of the external device ，5.08mm phoenix terminal |
| 27 | 485-B | B of the RS-485 serial port is connected to the B port of the external device ，5.08mm phoenix terminal |
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