We have
2 X S7 417H Prcessors on two racks set up for redundancy
2 X CP443-1 communications modules (1 on each rack)
When we power up the left hand power supply the whole rack gets powered up i.e. both plc's and both comms modules. All the LEDs on the processors come on and the comms modules look more or less normal. If the right hand power supply gets powered up on its own all the LEDs on all the modules flash. We have set up this configuration before and have never seen this situation.
We have swapped the power supplies but the symptoms remain the same.
Starting to think rack problems.
Any ideas guys ??
Barry
2 X S7 417H Prcessors on two racks set up for redundancy
2 X CP443-1 communications modules (1 on each rack)
When we power up the left hand power supply the whole rack gets powered up i.e. both plc's and both comms modules. All the LEDs on the processors come on and the comms modules look more or less normal. If the right hand power supply gets powered up on its own all the LEDs on all the modules flash. We have set up this configuration before and have never seen this situation.
We have swapped the power supplies but the symptoms remain the same.
Starting to think rack problems.
Any ideas guys ??
Barry