On PAC Display Runtime startup, the Event Viewer appears blank or grayed-out, and Runtime appears to hang.
If the Synchronize Control Engine Clock to PC Clock option is set for Auto Synchronization from Configurator (Configure→Runtime, Control Engine), the control engine continually re-synchronizes the time every 5 seconds once the next synchronization time includes, or extends past December 31.
For example, if the automatic synchronization time is set for every 7 days and synchronization occurs on December 27, continuous synchronization begins because December 31 is within the 7 day time frame of the next synchronization date.
There are two ways to workaround this problem. The first is to disable the Enable Auto Synchronization option in PAC Display Configurator (Configure→Runtime, Control Engine) by unchecking the option box. The second workaround is to set the PC clock time to a date so that January 1 is not within the number of days specified by the auto synchronization feature. The default, as shown above, is seven days.
Opto 22 has resolved this issue in the current PAC Display release. Contact Opto 22 Product Support if you need the fix for ioDisplay Runtime (using R7.1 or prior firmware in Ultimate I/O controllers), OptoDisplay Runtime, or for PAC Display R8.0 applications that cannot be upgraded to a higher revision (using R7.2 firmware in Ultimate I/O controllers).