ME31-AXAX4040 4 way Analog input Modbus gateway support network module ethernet io module

[Introduction]：ME31-AXAX4040 is a network I/O networking module with 4-way A relay output and 4-way dry connection input detection, supporting Modbus TCP protocol or Modbus RTU protocol, and the device can also be used as a simple Modbus gateway (automatically issuing non-native Modbus address instructions via serial /gateway).