How to acknowledge the fault?

Hi Team,

I am having similar issue (r2 [45]), issue could be resolved when I acknowledge it through TIA Portal or from AOP.

I want my PLC to acknowledge internally. I send 16#4FE (Fault Ack. Bit) to control word register. but it doesn't acknowledge the fault.

Is there any other way I can acknowledge internally ??

Please help,

Thanks,

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Split from I get the message "switching on inhibited - rectify fault acknowledge fault sto".

Hi

In r2 = [45] Switching on inhibited - remove fault cause, acknowledge fault
 

I am not able to acknowledge this from PLC by using 4FE.

Thanks

Hi

"Fault Number F06010: Infeed: Power Unit EP24V Missing in operation" and it happens when Contactor before ALM open (no AC power supply on ALMs input) and it makes ALM disabled by sending 16#47E.

When EP24V revive back i.e when ALM turns back on and the contactor before ALM close (now AC Power on ALM's input), then fault has to be acknowledge through TIA Portal or through AoP. 

It does not acknowledge by sending 16#4FE to control word.

Is there any other way to acknowledge alarm by the PLC when AC supply comes back to the Normal ??

Thanks 

Hi Guys,

Problem is solved, before contactor open, 16#47E should transferred to the control word so '0' should be in ON/OFF bit of the control word.. other wise it would give [45] in r2, 

I still dont know how to acknowledge internally but I rectified it in other way.

Thanks.