Rockwell Automation 1402-LSM Line Synchronization Module Installation Instructions - Manual (Page 42)

Chapter 4
Application Information
4–8
Discrete Inputs to the PLC–5 Continued
The Close Breaker discrete input to the PLC–5 indicates that all
synchronization criteria have been met and it is acceptable to close the
breaker between the Synchronizing Bus and the Reference Bus.
The Synchronization Failure discrete input to the PLC–5 indicates a
synchronization error. When this bit is set, the LSM cannot perform
Synchronizing Bus / Reference Bus synchronization.
When the Synchronization Failure discrete input to the PLC–5 is set, the
Synchronization Status word in the Synchronizing Bus Error Parameters
indicates the reason for synchronization failure.(See Appendix B Table B.6)
The Powered–up Bit discrete input to the PLC–5 indicates that the LSM has
completed internal self– tests and is ready to perform block transfers with the
PLC–5.
Included in Appendix B is a sample PLC–5 ladder program that interfaces
with the LSM. The data files used are described in Tables 4.4 and 4.5.
!
ATTENTION: Executing the Control Request BTW from the
sequencer file, or at a similar rate of speed could cause improper
operation of the LSM.
Interfacing to the LSM Continued
Ladder Program Description