这是三菱FX3U系列PLC实现MODBUS RTU从站的源码程序，用GX IEC Developer打开。-This is achieved Mitsubishi FX3U series PLC MODBUS RTU slave source program to open with the GX IEC Developer.

这是欧母龙PLC的一个MODBUS通信例程源码，用CX-ONE打开。-This is the European parent of a MODBUS PLC communication dragon routine source, with the CX-ONE open.