6/12/2024 10:14 AM | |
Joined: 10/30/2006 Last visit: 6/20/2024 Posts: 10 Rating:
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We have a similar configuration and I think it is weird that 'local' cards stop the PLC and 'remote' devices don't. Normally when you load the fault OB's, the PLC ignores HW errors and just stays in run mode.
The PLC is powered externally and the PS25W powers the CP cards. When I switch the PS ON the PLC goes to stop, but it is possible to put the PLC back to run. Same when switching the PS OFF, PLC goes to stop and possible to put back in run. When any (PN) remote IO is missing, the PLC just stays in RUN mode. Only when switching the local PS (and in this way powering up/down the CP cards), the PLC temporarily goes to stop. Is there a way to prevent the PLC from going to stop? Because what is described, is if you lose HW the PLC goes to stop, but this is not the case for remote PN hardware. (because of the loaded OB's). ------------------------------------------------------------------------------------------ |
Last edited by: TDC at: 06/12/2024 10:20:34Last edited by: Jen_Moderator at: 06/12/2024 12:12:40New subject after splitting Last edited by: TDC at: 06/12/2024 12:17:38Last edited by: TDC at: 06/12/2024 12:18:23 |
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6/12/2024 3:27 PM | |
Joined: 7/7/2010 Last visit: 8/19/2024 Posts: 15094 Rating:
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Do you have the OB82 (Diag Hardware Error Interrupt OB) in your plc project?
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science guy |
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