Watlow Electric Ramping and Profiling Microprocessor-Based Control SERIES 1500 - Manual (Page 60)

Technical Reference
60 WATLOW Series 1500 User's Manual
to Run and Halt A Program
Here is how to run and halt Series 1500 programs.
How to Run a Program
When you have all program steps defined and entered, press RESTART to return the
processor to Step 01. Then press RUN/HALT to begin the program.
How to Halt a Program
To stop the program, press RUN/HALT. The PROG HALT LED will light. The
program stops in the current step.
The processor holds all values for the outputs as they were at the moment the pro-
gram stopped. That means the controller is controlling to a fixed value, the set point
at the instant of termination.
How to Restart a Program
Press the RUN/HALT key to restart the program. The PROGRAM HALT LED goes
out. If you entered no new data or did not change steps during the halt, the program
resumes where it left off, completing the time remaining in the current step.
If, however, you changed the step data or the step number during the halt, the pro-
cessor starts at the beginning of the step in progress when you hatted the program.
Remote Hold Input
Closing the remote hold input switch causes the Series 1500 to pause until the switch
opens. Remote hold is indicated by a flashing “RUN/HALT” LED. The Series 1500
actively maintains the set point and event output conditions which exist at the time
when remote hold occurs.
Run and Halt, Chapter 4