7/13/2023 0 Comments Et200s modbus rtu![]() My question is how this going with ET200s side cuz friend of mine told me here we have to deal with construction of MODBUS message. ![]() I dont need to take care of the modbus protocol rules with s7-1200 modbus rtu solution. One function you use once in OB100 and another you are using cyclic in OB1 I have worked with s7-1200 and with CM in your program you just need in a case of modbus master to use 2 functions. Can someone explain me what's programming difference in realisation of the modbus rtu regarding these 2 CPUs.
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