Allen-Bradley CompactLogix 5480

Rockwell Automation Publication 5069-UM002A-EN-P - January 2019 255
Troubleshoot the Controller Chapter 11
Local Clock
Synchronization Status Displays whether the local clock is synchronized or not synchronized with the
Grandmaster reference clock. A clock is synchronized if it has one port in the slave state
and is receiving updates from the time master.
Offset to Master Displays the amount of deviation between the local clock and the Grandmaster clock in
nanoseconds.
Backplane State Displays the current state of the backplane. The available values are as follows:
• Initializing
• Faulty
• Disabled
• Listening
• PreMaster
• Master
• Passive
• Uncalibrating
• Slave
• None
Ethernet State Displays the state of the Ethernet port. The available values are as follows:
• Initializing
• Faulty
• Disabled
• Listening
• PreMaster
• Master
• Passive
• Uncalibrating
• Slave
• None
IMPORTANT: When the controller operates in Dual-IP mode, this attribute provides data
for each controller port. The fields appear as follows:
• A1, Ethernet State
• A2, Ethernet State
Table 25 - Time Sync Parameters (Continued)