[Communication interface]：RJ45, RS485
[Working voltage]：DC 8~28V
[Installation method]：Guide rail/screw
[Introduction]：ME31-XDXX0400 is a PT100 thermal resistor temperature acquisition module with 4-channel PT100 temperature acquisition function, and supports the acquisition of 2/3-wire PT100 temperature sensors. It also has a display screen to facilitate customers to debug and configure on-site and view the temperature. This temperature acquisition module supports both network and RS485 communication interfaces, and supports Modbus TCP protocol or Modbus RTU protocol for acquisition. It can also be used as a Modbus gateway, automatically sending instructions from non-local Modbus addresses through the serial port/network port, supporting Modbus TCP and Modbus RTU protocol conversion, and convenient for expanding Modbus slave devices.
| Category | Name | Parameters |
| power supply | Working voltage | DC8～28V |
| Power indicator | Blue LED indication | |
| Communication | Communication interface | RJ45, RS485 |
| Baud rate | 1200~115200bps (default 9600) | |
| Communication protocol | Standard Modbus TCP, Modbus RTU protocol | |
| MODBUS | Device address | Can be modified through Modbus command, host computer, device button |
| Temperature collection | Number of channels | 4-way |
| Sensor type | 2, 3-wire PT100 temperature sensor | |
| Temperature resolution | 0.1℃ | |
| Accuracy | Normal temperature (25±5℃) condition: ±0.1%±1℃ | |
| Full temperature (-40~85℃) condition: ±0.5%±1℃ | ||
| Collection frequency | 1Hz | |
| Collection display | OLED screen display | |
| other | Product size | 121mm * 72mm * 34mm (length * width * height) |
| Product weight | 140 ±5 g | |
| Working temperature and humidity | -40 ～ +85℃, 5% ～ 95%RH (no condensation) | |
| Installation method | Guide rail installation, screw installation |
| Category | Name | Parameters |
| Ethernet parameters | Working mode | TCP server (up to 4 client accesses) |
| Local IP | 192.168.3.7 | |
| Local port | 502 | |
| Subnet mask | 255.255.255.0 | |
| Gateway address | 192.168.3.1 | |
| DHCP | Off | |
| Local MAC | Determined by the chip (fixed) | |
| Target IP | 192.168.3.3 | |
| Target port | 502 | |
| DNS server | 114.114.114.114 | |
| Active upload | Off | |
| Serial port parameters | Baud rate | 9600bps (8 types) |
| Check method | None | |
| Data bit | 8 | |
| Stop bit | 1 | |
| MODBUS Parameters | Modbus master-slave | Slave |
| Address | 1 |