QVZ LED Flashing Fast

KenPEX

Member
K
Join Date
Jun 2010
Location
Pennsylvania
Posts
8
I have a QVZ led flashing fast, I know that this is a communication or a problem with the perferal card. CPU is in run and machine is running. Any other suggestions?
 
Did you change anything on the I/O's? Check the power supply for every I/O card. If the problem is an I/O failure the AKKU1/2 from the USTACK should point you in the right direction.

Good luck!
 
I changed one of the CP 523 communication modules that i suspected. QVZ cleared on PLC power up and everything is good for now. Thanks for the replys
 

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