Niagara R2 Master-Slave Schedule Fault After UNC Reboot

[Product_Support]

Issue

In Niagara R2, master-slave schedules are not working. The slave schedule goes into fault and will not clear. The following error appears in the UNC standard output window:

ERROR: Could not init node [/OZS_UNC1/IbsAsdNetwork/AHU_9/MZ2_93/Schedule_8]

Product Line

TAC IA Series

Environment

Niagara R2

Cause

This fault occurs when:

• The Enterprise Server has a holiday calendar and master schedule.
• The UNC only has a slave schedule.
• After a UNC reboot, the slave schedule checks the master schedule on the server to determine if it’s a holiday.
• If there is a communication issue during this check, the slave schedule object enters fault.

Resolution

1. Delete and re-create the slave schedule object in the UNC.
2. Ensure both master/slave schedule and master/slave calendar objects exist in both the Enterprise Server and UNC stations.
3. Verify communication between the UNC and Enterprise Server before rebooting.