davej
Member
Hi All,
First time caller, long time listener...
Have a new system in the field with a new controllogix 1756-DHRIO talking to 6 existing chassis of SLC I/O (1 ASB and 3 chassis on each DHRIO channel). Have about 12 slots of analog I/O (NI4 and NO4I) on the remote chassis, so I'm using MSGs to read/write.
Mostly things work ok, but occasionally we are getting LONG delays on the analog reads and writes. Eg. we clear the analog output write value and it takes 10-15sec for the mA at the card to clear. By "occasionally" I mean we actually notice it several times an hour, but it may be more often than that.
Is this 'normal'? I knew RIO was slower than local but 15sec seems excessive.
I don't think there's any errors in the MSG programming but I'm not ruling that out cuz I don't use them much, I've attached a screenshot.
No obvious faults or errors on the card during normal operation, HOWEVER, the DHRIO has twice in the last week stopped responding with an "850C" error code. Had to cycle power to clear. Our AB rep said this could be either excessive noise (which I think we've ruled out), or a card failure. Maybe we just need to try a different DHRIO?
Any feedback greatly appreciated, this project is making me seriously consider a change in career :-(
--- Dave
First time caller, long time listener...
Have a new system in the field with a new controllogix 1756-DHRIO talking to 6 existing chassis of SLC I/O (1 ASB and 3 chassis on each DHRIO channel). Have about 12 slots of analog I/O (NI4 and NO4I) on the remote chassis, so I'm using MSGs to read/write.
Mostly things work ok, but occasionally we are getting LONG delays on the analog reads and writes. Eg. we clear the analog output write value and it takes 10-15sec for the mA at the card to clear. By "occasionally" I mean we actually notice it several times an hour, but it may be more often than that.
Is this 'normal'? I knew RIO was slower than local but 15sec seems excessive.
I don't think there's any errors in the MSG programming but I'm not ruling that out cuz I don't use them much, I've attached a screenshot.
No obvious faults or errors on the card during normal operation, HOWEVER, the DHRIO has twice in the last week stopped responding with an "850C" error code. Had to cycle power to clear. Our AB rep said this could be either excessive noise (which I think we've ruled out), or a card failure. Maybe we just need to try a different DHRIO?
Any feedback greatly appreciated, this project is making me seriously consider a change in career :-(
--- Dave