gromit

SLC5/05 1747-L553 intermittent loss of communication

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SLC5/05 1747-L553 intermittent loss of communication

Has anyone ever experience an intermittent loss of communication between the SLC5/05 1747-L553 PLC and a computer which can only be recovered by cycling power on the PLC?

We are experiencing a communication loss sometimes once a week, sometimes more...and it is occurring on three different PLCs.

A PLC specialist or contractor claims that the loss of communication can be caused by the PLC firmware.

The specs from the PLC are as follows:

PLC model: SLC5/05 1747-L553

 

CAT: 1747-L553 SER C PROC REV 5

 

OS# 1747-OS501 SER C FRN 9

 

Has anyone experienced this type of loss, and if so what would be the best course of action to take?

Is there a sniffer that can be employed to determine if the comms loss is caused by the PLC, by the computer, or by something else.

Please advise.

Thanks!

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Havent seen that, but I have seen where a device such as the PLC can get overloaded on a network without a managed switch. 

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