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I have a problem, I have a S7 PLC, 416-2 Dp. it has 10 slaves on the DP network. The machine was running and then shipped overseas. now the S7 has a bus and system fault and none of the slaves can be seen online; they all "module not available". Since the PLC sw was not changed, I initially thought that I had a cabling problem. I checked all and even added new profibus cables. I modified the HW config, to only show the 1st rack and put just a single cable on that rack only, still have the same problem.
If I go into the HW config, and to the DP and "disconnect the master system" compile and download, the bus and system faults go away.
Any ideas?
If I go into the HW config, and to the DP and "disconnect the master system" compile and download, the bus and system faults go away.
Any ideas?