6.2 Clearing Program Memory (Reinitializing program steps)
When the controller is shipped from the factory, all program steps are initialized to their default values as shown below. To create a usable program for the controller to run, the user enters replacement values in those program steps to be used. All program steps are retained in memory even during power down of the controller. When it becomes necessary to clear all of the user programmed steps from memory, use the CLEAR PROGRAM <CLEAR/PROG> key on the keyboard. All program steps will be reinitialized to their default values. The procedure below will reinitialize all program steps to their default values.
To reinitialize all program steps to their default values, press <CLEAR/PROG> to display the clr warning message on the display, then press <CLEAR/PROG> again to return all program steps to their default values as shown below. If ever you accidentally press <CLEAR/PROG> and see the clr warning on the
display, you may press any key except the <CLEAR/PROG> key abort the memory clearing process.
Note: The two presses of <CLEAR/PROG> must be at least ½ second apart. This assures that the two presses were intentional and prevents accidental program erasure. Once program memory has been erased, it cannot be restored.
When the program memory is reinitialized, each of the 100 program steps is initialized to the following default values (null program steps):
Substep 0 | 30.0 | (30 degrees C.) |
Substep 1 | 00.00 | (Ramp time zero) |
Substep 2 | 00.00 | (Hold time zero) |
Substep 3 | SS+1 | (Next sequential step) |
Substep 4 | 1 | (Active Probe one) |
6.3 Displaying Program Steps (not during execution)
To display the program steps, press the DISPLAY CONTROL key <DISP/CNTL>. Unless you are already in program mode and have just displayed a different program step, step 0, substep 0 (the setpoint for step zero) will be displayed. Each subsequent press of the <DISP/CNTL> key will cause the display to increment to the next program substep.
To display a specific program step, enter a one or two digit step number directly after any press of the <DISP/CNTL> key and then press the <DISP/CNTL> key again to display the entered step.substep 0.
48 | C4 Manual Rev 7.5.2 |