Rockwell Automation 1756-SYNCH ControlLogix SynchLink Module User Manual - Manual (Page 68)

Publication 1756-UM521C-EN-P - July 2004
6-6 Troubleshooting the SynchLink Module
Using Diagnostic Counters The 1756-SYNCH module uses diagnostic counters; the counters contain
additional information about the module. See Table 6.3 for more information
on the SynchLink module diagnostic counters. This information must be used
in the Destination field of the Configuration pop-up screen (page 6-10).
For more information on how to access the diagnostic counter information,
see page 6-7.
Table 6.3 SynchLink Module Diagnostic Counters
Name: Description: Data Type Attribute ID: Possible Values:
Status Status of this device on the
SynchLink system DINT 1 This counter lists the status of the following bits (0 = bit is
not faulted, 1 = bit is faulted):
• Bit 0 - Reserved (default =0)
• Bit 1 - Reserved (default =0)
• Bit 2 - Receive fault. No data has been received
from the upstream device.
• Bit 3 - Data Fault. The upstream device is in the
idle state.
• Bit 4 - Data Comm Format Mismatch Fault. The
communications format of data received from the
upstream device does not match this device’s
receive port communications format.
• Bit 5 – Duplicate SynchLink Time Master Fault –
This device is configured to be SynchLink Time
Master but has received a CST update from
another Time Master
• Bit 6 – CST Drifting – CST synchronization with
SynchLink was not verified at last beacon but
was verified within last 6 beacon updates
• Bit 7 – CST Synchronization Fault – The device
CST is not synchronized with SynchLink.
• Bit 8 – Multiplier Overflow Fault – The output of
the multiplier exceeded 16 bits
• Bit 9 – Axis 0 Receive Fault – The device is
configured to receive Axis 0, but Axis 0 was not
received from the SynchLink system.
• Bit 10 – Axis 1 Receive Fault – The device is
configured to receive Axis 1, but Axis 1 was not
received from the SynchLink system.
• Bit 11 – Axis 0 Unclaimed Fault – Axis 0 was
received from the SynchLink system but was not
consumed by the local controller.
• Bit 12 - Axis 1 Unclaimed Fault – Axis 1 was
received from the SynchLink system but was not
consumed by the local controller.
• Bit 13 – Axis 0 Transmit Fault – The device is
configured to transmit Axis 0, but Axis 0 was not
produced by the local controller.
• Bit 14 – Axis 1 Transmit Fault – The device is
configured to transmit Axis 1, but Axis 1 was not
produced by the local controller.
• Bit 15 – SynchLink Revision Fault – The
SynchLink revision was received but the data is
not compatible with the receiving module’s
revision.
• Bits 16 to 31 – Unused (Default = 0)