M31-XXXA0008G Distributed Remote IO Module for Analog and Digital Signal Acquisition, Supporting Standard Modbus Protocol, Freely Configurable and Easily Expandable.
[Communication interface]：RJ45, RS485
[Working voltage]：DC 9~36V
[Product weight]： 170±5g
[Introduction]：The M31 series distributed IO host supports Modbus TCP and RTU protocols, allows up to 5 clients to access simultaneously, and is compatible with function codes 01, 02, 03, 04, 05, 06, 15, and 16. The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity, and Anti-Salt Spray. This reduces costs while facilitating easy integration into existing site environments. The device includes built-in status diagnostics for real-time monitoring of IO module communication status.
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| M31-XXXA0008G port and button description: | ||
| silk screen | name | illustrate |
| AO1 | AO1 analog output (positive pole) | AO1 analog output (positive) interface, used in conjunction with GND1 |
| GND1 | AO1 analog output (negative pole) | Analog output (negative pole) interface of AO1 |
| AO2 | AO2 analog output (positive pole) | AO2 analog output interface, used in conjunction with GND2 |
| GND2 | AO2 analog output (negative pole) | AO2’s analog output (negative pole) interface |
| AO3 | AO3 analog output (positive pole) | AO3 analog output interface, used in conjunction with GND3 |
| GND3 | AO3 analog output (negative pole) | AO3’s analog output (negative pole) interface |
| AO4 | AO4 analog output (positive pole) | AO4 analog output interface, used in conjunction with GND4 |
| GND4 | AO4 analog output (negative pole) | Analog output (negative pole) interface of AO4 |
| AO5 | AO5 analog output (positive pole) | AO5 analog output (positive) interface, used in conjunction with GND5 |
| GND5 | AO5 analog output (negative pole) | AO5’s analog output (negative pole) interface |
| AO6 | AO6 analog output (positive pole) | AO6 analog output interface, used in conjunction with GND6 |
| GND6 | AO6 analog output (negative pole) | Analog output (negative pole) interface of AO6 |
| AO7 | AO7 analog output (positive pole) | AO7 analog output interface, used in conjunction with GND7 |
| GND7 | AO7 analog output (negative pole) | Analog output (negative pole) interface of AO7 |
| AO8 | AO8 analog output (positive pole) | AO8 analog output interface, used in conjunction with GND8 |
| GND8 | AO8 analog output (negative pole) | Analog output (negative pole) interface of AO8 |
| VO+ | Power output positive pole | The positive pole of the power supply output is the same as the power supply voltage of the device. |
| VO+ | Power output positive pole | The positive pole of the power supply output is the same as the power supply voltage of the device. |
| VO- | Power output negative pole | The negative pole of the power supply output is the same as the power supply voltage of the device. |
| Reload | Factory reset/auto-negotiation | Press and hold for 5-10 seconds to restore factory settings; double-click within 2 seconds to automatically negotiate the expansion module |
| A(RS485) | RS485 A interface | RS485 A interface |
| B(RS485) | RS485 B interface | RS485 B interface |
| G(RS485) | RS485G interface | RS485G interface |
| ON | ground | ground |
| V-(DC9-36V) | Negative pole of power supply | DC (9-36V) power supply negative interface |
| V+（DC9-36V） | Positive power supply | DC (9-36V) power supply positive interface |
| LAN1 | Network port | Standard RJ45 network cable interface |