Hi,
I'm looking for a bit of help regarding a devicenet problem on one of the machines at my workplace.
Basically one of the inverter drives has stopped opperating.
On the SLC 5 plc rack there is a 1747-SDN devicenet scanner module, this is showing an error 77 at node 2
Node 2 is an Allenbradley 160-DN2 devicenet communication module connected to a AB160C drive.
I've tried swapping the card to another identical drive and the fault transfers with it.
I have no experience of devicenet, so any help would be most apreciated.
Best regards, Colin
Full Version: devicenet error 77
Just as an extra!
I Addressed the brand new card to Node 4 and the Error moved to Node 4.
I addressed Node 4's card to Node 2 and the fault on Node 2 cleared.
What are the chances of me recieving 2 broken 160-DN2 cards.
I am truly stummped!
I Addressed the brand new card to Node 4 and the Error moved to Node 4.
I addressed Node 4's card to Node 2 and the fault on Node 2 cleared.
What are the chances of me recieving 2 broken 160-DN2 cards.
I am truly stummped!
QUOTE (sparkotronic @ Sep 18 2009, 09:17 AM) 
Hi,
I'm looking for a bit of help regarding a devicenet problem on one of the machines at my workplace.
Basically one of the inverter drives has stopped opperating.
On the SLC 5 plc rack there is a 1747-SDN devicenet scanner module, this is showing an error 77 at node 2
Node 2 is an Allenbradley 160-DN2 devicenet communication module connected to a AB160C drive.
I've tried swapping the card to another identical drive and the fault transfers with it.
I have no experience of devicenet, so any help would be most apreciated.
Best regards, Colin
I'm looking for a bit of help regarding a devicenet problem on one of the machines at my workplace.
Basically one of the inverter drives has stopped opperating.
On the SLC 5 plc rack there is a 1747-SDN devicenet scanner module, this is showing an error 77 at node 2
Node 2 is an Allenbradley 160-DN2 devicenet communication module connected to a AB160C drive.
I've tried swapping the card to another identical drive and the fault transfers with it.
I have no experience of devicenet, so any help would be most apreciated.
Best regards, Colin
From the manual, error 77 is:
DATA SIZE EXPECTED BY THE DEVICE DOES NOT MATCH THE SCAN LIST ENTRY.
RECONFIGURE MODULE FOR CORRECT TRANSMIT AND RECEIVE DATA SIZES.
I haven't used the 160-DN2, but have seen this same error on Armorstart drives when the I/O wasn't mapped, or was mapped differently than what the scanner was expecting.
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