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M31-XXXA0008G Distributed Remote IO Module for Analog and Digital Signal Acquisition, Supporting Standard Modbus Protocol, Freely Configurable and Easily Expandable.
[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. Its expandable design enables the connection of up to 16 IO expansion modules as needed, eliminating the need to purchase a complete system. 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 |