Good Morning ,
We had our 2nd episode in 4 weeks with a 1756-L62 processor causing a backplane communication issue , that caused us to lose communication to our Sercos , input and output modules. We changed the Power Supply , Backplane ,etc.
Even powering the rack down and back up , never restored the communication. The CPU never showed a fault.
Been speaking with Rockwell and they sent me Technical Note ID 41204 , about a noise issue in a number of 1756 modules manufactured from September 2006 thru June 2007.In the technical note they refered to a ASIC component . If it had ATMEL stamped on the component it was a possible module that had that potential to fail due to noise issues.
When it fails , the following slots show the following....
Power Supply - Good
Slot 0 - 1756-L61 Good
Slot 1 - 1756-ENBT Good
Slot 2 - 1756-M16SE Faulted ( This does say ATMEL but
not the correct number )
Slot 3 - 1756-IB32 Faulted
Slot 4 - 1756-OB32 Faulted
Slot 5 - 1756-IB16 Faulted
Slot 6 - 1756-OF 8 Faulted
Slot 7 - 1756-OF 8 Faulted
Slot 8 - 1756-IR6I Faulted
RS Linx only sees the Processor and 1756-ENBT module.
Have you guys ever seen this before ?
Thanks so much for your help.
We had our 2nd episode in 4 weeks with a 1756-L62 processor causing a backplane communication issue , that caused us to lose communication to our Sercos , input and output modules. We changed the Power Supply , Backplane ,etc.
Even powering the rack down and back up , never restored the communication. The CPU never showed a fault.
Been speaking with Rockwell and they sent me Technical Note ID 41204 , about a noise issue in a number of 1756 modules manufactured from September 2006 thru June 2007.In the technical note they refered to a ASIC component . If it had ATMEL stamped on the component it was a possible module that had that potential to fail due to noise issues.
When it fails , the following slots show the following....
Power Supply - Good
Slot 0 - 1756-L61 Good
Slot 1 - 1756-ENBT Good
Slot 2 - 1756-M16SE Faulted ( This does say ATMEL but
not the correct number )
Slot 3 - 1756-IB32 Faulted
Slot 4 - 1756-OB32 Faulted
Slot 5 - 1756-IB16 Faulted
Slot 6 - 1756-OF 8 Faulted
Slot 7 - 1756-OF 8 Faulted
Slot 8 - 1756-IR6I Faulted
RS Linx only sees the Processor and 1756-ENBT module.
Have you guys ever seen this before ?
Thanks so much for your help.