Program Mode; To Erase Existing Memory - Omron SYSMAC C Series User Manual

Using the programming console
PROGRAM mode
To erase existing memory
Caution:
If the mode selector switch is turned to PROGRAM, this is what you'll see
when you apply power to the PC.
This is your electronic sentry that blocks unauthorized use of the PC. To
gain access, an actual password isn't necessary—just this key se-
quence:
The PC responds with a beep each time you depress a key. This is what
you now will see, informing you of the mode you are in.
To clear this, press
CLR
At this point you are ready to begin entering your program step-by-step
using the code you wrote from your ladder diagram in Chapter 3. The
display you see is the starting address of the memory. This location is
used in connection with the quick-search editing functions.
Let's skip this for now because we won't need to use it until after we have
input our program.
Although it is possible to overwrite an old program with a new one, this is
not recommended because it may cause confusion and lead to
program-writing errors.
If the programming console has been used before and an old program
currently exists in the memory, carry out the procedure given next.
The following procedure will entirely and permanently erase any program
that currently exists in the CPU memory.
Anytime you want to erase the memory or start over when inputting your
program use this key sequence:
PLAY REC