Hello,
I have to communicate with different S7-300s and S7-400s installed at different machines.
I am able to communicate perfectly with the PLCs that either do not have profibus or have profibus connected to HMI only.
But when I try to communicate with PLC having modules connected through profibus, I am not able to communicate successfully.
I receive the error "The set local node address is already in use"
I am using MPI cable, and the PG/PC is set to MPI adaptor.
Any idea whats lacking?
I have to communicate with different S7-300s and S7-400s installed at different machines.
I am able to communicate perfectly with the PLCs that either do not have profibus or have profibus connected to HMI only.
But when I try to communicate with PLC having modules connected through profibus, I am not able to communicate successfully.
I receive the error "The set local node address is already in use"
I am using MPI cable, and the PG/PC is set to MPI adaptor.
Any idea whats lacking?