[Communication interface]: RJ45, RS485
[Working voltage]:DC 9~36V
[Product weight]:180±5g
[Introduction]:The M31 series distributed IO host supports Modbus TCP protocol and Modbus RTU protocol for acquisition control. The device supports simultaneous access by 5 clients and supports function codes 01/02/03/04/05/06/15/16. The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity, and Anti-Salt Spray. This saves costs and facilitates customers to access the current on-site environment; the modules are self-contained. With status diagnosis function, it can monitor the communication status of IO modules in real time; it can support a maximum of 16 IO expansion modules.
| Symbol | name | Function Description |
| DI1 | Dll switch input | Dll switch input interface, used in conjunction with COMA |
| DI2 | DI2 switch input | DI2 switch input interface, used in conjunction with COMA |
| DI3 | DI3 switch input | DI3 switch input interface, used in conjunction with COMA |
| DI4 | DI4 switch input | DI4 switch input interface, used in conjunction with COMA |
| COMA | DI switch input common terminal | DI1-DI4 share the COMA common port |
| DI5 | DIS switch input | DI5 switch input interface, used in conjunction with COMB |
| DI6 | DI6 switch input | DI6 switch input interface, used in conjunction with COMB |
| DI7 | DI7 switch input | DI7 switch input interface, used in conjunction with COMB |
| DIS | DIS switch input | DI8 switch input interface, used in conjunction with COMB |
| COMB | DI switch input common terminal | DI5-DI8 share the COMB common terminal |
| DI9 | DI9 switch input | DI9 switch input interface, used in conjunction with COIC |
| DUO | DUO switch input | DI10 switch input interface, used in conjunction with CONIC |
| DIll | DIll switch input | DIll switching input interface, used in conjunction with CONIC |
| DI12 | DI12 switch input | DI12 switch input interface, used in conjunction with CONIC |
| DI13 | DI13 switch input | DI13 switch input interface, used in conjunction with COMC |
| DI14 | DI 14 switch input | DI 14 switch input interface, used in conjunction with COMC |
| DI15 | DI15 switch input | Dll 5 switch input interface, used in conjunction with COMC |
| DI16 | DI16 switch input | DI16 switch input interface, used in conjunction with COMC |
| COMC | DI switch input common terminal | DI9-DI16 share the COMC common terminal |
| Reload | Factory reset auto-negotiation | Press and hold for 5-10 seconds to restore factor}- 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 |
| PE | ground | ground |
| V-(DC9-36V) | Negative pole of power supply | DC (9-36V) power supply negative interface |
| V+ (DC9-36V) | Positive pole of pcwer supply | DC (9-36V) power supply positive interface |
| LAN1 | Network port | Standard RJ45 network cable interface |