Manual

Technical Reference

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