A UNC was upgraded from version 431 to 5xx and polled GCM objects update more slowly. What settings can be reviewed to ensure they are set at recommended values?
TAC I/A Series
Niagara R2 UNC-520 (all revisions)
The older revision of the UNC and the age of the installation could play a role in the station settings, for the GCMCommService, not being set at recommended values.
Appendix B of the Niagara Network 8000 Serial Driver Engineering Guide (F-27070) reviews the recommended settings of the GCMCommService. Below is Figure 48 illustrating the General - Config tab of the GCMCommService properties with the required changes from Technical Bulletin 03_03:
Below is Figure 52 illustrating the Poll - Config tab of the GCM object. Use a cycleTime of 0 ms to synchronize the GCM's Poll Cycle with that of the GCMCommService. It is best to use the same cycleTimes for both the GCMCommService and the GCM object itself.