ALLEN BRADLEY 1747-L551 PLC Processor

8–12
Starting Up Your Control System
8. Conduct a Dry Run
!
ATTENTION: During all phases of checkout, station
a person ready to operate an emergency-stop switch if
necessary. The emergency-stop switch will
de-energize the master control relay and remove power
from the machine. This circuit must be hardwired
only, it must not be programmed.
After thoroughly checking out the controller system and program,
proceed with a dry run of the application with all of the output
devices enabled. This dry run will vary with the application. A
machine tool dry run would test the program with all outputs enabled
but without tooling an actual part.
After you check out the entire system, and your dry run has been
completed satisfactorily, we recommend that you load your program
into an EEPROM memory module for back-up program storage.
Refer to the Hand-Held Terminal User Manual (Catalog Number
1747-NP002) or your programming software’s user manual for
directions on loading the EEPROM from RAM.
This step completes start-up procedures. Your SLC programmable
controller is now ready for operation.
Publication 1747-6.2