• Replies 9 replies
  • Subscribers 581 subscribers
  • Views 639 views
  • Users 0 members are here
Options
Related

Upgrade to Citect 2018 ABCLX redundancy problems

Peter

We are in the middle of upgrading to 2018 from V7.2 and cannot get the IO servers that use ABCLX drivers to be redundant. If the primary is on and the standby is off data shows on screen just fine. Then when the standby is turned on the points all go to #BAD or #PEND (off and on, occasionally data does come in but then goes right back to bad/pend) . This also occurs if the primary is off and the standby is on and then the primary gets turned on. Does anyone have any suggestions for us to try?

Parents
  • Hi Peter,
    I'd recommend checking out TN7517, it reports a similar issue and how to overcome it. Essentially it says that the PLC is overloaded and some ABCLX parameters need to be tuned. You could also look at tuning the overhead communications time-slice in the PLC to give more bandwidth to the SCADA. I'd also recommend reaching out to Citect Support to assist troubleshoot this issue further.
Reply
  • Hi Peter,
    I'd recommend checking out TN7517, it reports a similar issue and how to overcome it. Essentially it says that the PLC is overloaded and some ABCLX parameters need to be tuned. You could also look at tuning the overhead communications time-slice in the PLC to give more bandwidth to the SCADA. I'd also recommend reaching out to Citect Support to assist troubleshoot this issue further.
Children
No Data
© 2025 AVEVA Group Limited or its subsidiaries. All Rights Reserved.