Communication between PC 677 Siemens and CPU 115U 945


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We are researching a way to set the communication between the PC677 from Siemens and the old PLC Siemens S5 CPU 945 115U.

PC677 Siemens -> there is a port MPI/Profibus available.

PLC -> there is only the configuration port available.

We will use a Supervisory Program to read some data from the PLC.

We couldn't find the cable required.