[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 product adopts an scalable design in structure. During use, if the user finds that the current device has some functions When the needs cannot be met, you can select the corresponding IO expansion modules according to the missing functions and splice them together to achieve the functions. There is no need to purchase the whole machine. 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.
| Category | Name | Parameter |
| power supply | Operating Voltage | DC9 ~ 36V |
| Power indicator | PWK red LED indicator light | |
| communication | Communication interface | RJ45, RS485 |
| baud rate | 9600bps (optional) | |
| Protocol | Standard Modbus TCP, Modbus RTU protocol | |
| MODBUS | Device address | be modified through Modbus instructions, host computer and hardware dialing |
| DI input | input type | NPN,PNP |
| Input voltage | 12~24 V | |
| Collection frequency | Maximum 2.5 Hz | |
| Input instructions | DI green LED indicator light | |
| AI input | Collection characteristics | Single-ended input |
| input type | 0-20mA, 4-20mA | |
| AI resolution | 3% | |
| Collection frequency | Maximum 2.5 Hz | |
| Input instructions | none | |
| DO output | DO output type | Type A relay(Normally open) |
| DO output mode | Level output | |
| Relay contact capacity | 5A 30VD,5A 250VAC (the maximum supported total current of the same COM common terminal is 8A) | |
| Output instructions | DO green LED indicator light | |
| other | Product Size | 1 10 mm * 40 mm * 100 mm (length*width*height) |
| Working temperature and humidity | ‘-40～+85℃, 5%～95%RH (no condensation) | |
| Storage temperature and humidity | -40 ~ +105℃, 5% 〜95%RH (no condensation) | |
| Installation method | Installation of positioning holes and guide rails |
Device default parameters
| Category | Name | Parameter |
| Basic parameters | Modbus address | 1 |
| baud rate | 9600bps (9 options available) | |
| Check digit | None (default). Odd, Even | |
| data bits | 8 | |
| Stop bit | 1 | |
| DI filter parameters | 6 | |
| AI filter parameters | 6 | |
| Network parameters | Operating mode | TCP server (up to 5 clients access) |
| DHCP | closure | |
| Gateway address | 192.168.3.1 | |
| subnet mask | 255.255.255.0 | |
| Local IP | 192.168.3.7 | |
| native port | 502 | |
| Target IP | 192.168.3.3 | |
| target port | 502 | |
| DNS sen-er | 114.114.114.114 | |
| Native MAC | Determined by chip (fixed) |
