Help with a kind of S5-115 or S5-155H PLC


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Hello guys,

I'm having a lot of trouble defining what kind of PLC does it have a Machine that I need to connect to a Probibus network, the machine is a Blistering IMA C90, the PLC is like a S5-155H but has the power supply is on the left side.

The back plane says: Siemens SMP16-SYS402-A05
& 6AR1305-0AA0-LB-W00006542

It is really confusing cause the Central Unit does not have any labels on one side of the printed circuit board says: PC612-F1200-C963. It looks like the central unit but I don't see any more labels there.

Please help!