Hello,

I have a problem with the communication within PLC Siemens S7300 (CPU 315 2PN/DP + CP 341 modbus RTU master 485) and the unit controller CP IV of Mayekawa, but I have not been available to communicate.

If someone has made this communication help me.

Thanks,

LS

Kaulquappe

Hello Luis,
please be more precise in your error description.

When I read "it doesn't work" my first idea is always: change operator.

Regards,
Kaulquappe

Hello,

Well, I download the program configuration example in the CPU S7300 + CP 341, check the serial cable from PLC to slave, before connect to slave on the network I try with simulator and the answer was good, but when I connect the slave to network its didn't work.

I saw the led status communication and those blink as if there were communication but in the data table only show 0.

How I know if the communication is good? or what is the problem (slaver o master).

Thanks,

LS