I have had some strange results recently when trying to phase some
compounds in an AB Integrator 30.
Here are the particulars.
The Integrator is running with a Base Processing Cycle (BPC) of 1 second.
Most of the existing COMPOUNDS are running with a PERIOD 1 PHASE 0.
(That should be every second, on phase 0)
Most of the BLOCKS in the existing compounds are running with a PERIOD 3
PHASE 0.
(That should be every two seconds, on phase 0)
All of this is working correctly.
We added a COMPOUND with a PERIOD 3 PHASE 1.
(That should be every two seconds, on phase 1)
The BLOCKS in the new compound are PERIOD 3 PHASE 1.
(That should be every two seconds, on phase 1)
This PERIOD, PHASE combination is acceptable to the control configurator.
However, the ABSCAN block will not successfully connect and read data from
the PLC at this PERIOD (3) and PHASE (1). If I change the PHASE to a 0 on
these COMPOUNDs and BLOCKs every thing works. But having everything PHASED
at 0 causes issues with the station loading.
I hope some of you can shed some light on this mystery for me.
Thanks,
David Johnson
[EMAIL PROTECTED]
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