Clearing Memory - Omron SYSMAC mini SP10 Operation Manual

Inputting the Program
3-5-3

Clearing Memory

Key Sequence
All Clear
Partial Clear
1 000
B
When the mode switch of the Programming Console and the operation mode
of the PC being monitored are not identical, a message like the following one
will be displayed.
<RUN>
B
MODE SET ERR
In this example, the message indicates that the Programming Console is set
to PRGM (program) mode, and that PC #1 is set to RUN mode. To clear the
error and reset the corresponding alarm, turn the Programming Console
mode to RUN and then change it back to PRGM mode. PC #1 will change to
PRGM mode.
Note If there is a communication error, the display will read "COMM ERR".
Using the Memory Clear operation it is possible to clear part or all of the Pro-
gram Memory, work bits, and the DR and TC areas. Unless otherwise speci-
fied, the clear operation will clear all of the above memory areas, as well as
the contents of the Programming Console's memory.
Before beginning to program for the first time or when installing a new pro-
gram, clear all memory areas. Before clearing memory, check to see if a pro-
gram is already loaded that you need. If you need the program, clear only the
memory areas that you do not need, and be sure to check the existing pro-
gram with the program check key sequence before using it. The check se-
quence is provided later in this section. To clear all memory areas, press
CLR until all zeros are displayed, and then input the keystrokes given in the
top line of the following key sequence. The branch lines shown in the se-
quence are used only when performing a partial memory clear, which is de-
scribed below. When program memory has been cleared NOP(00) instruc-
tions (00) are written to the entire area of memory. These instructions per-
form nothing.
Memory can be cleared in PROGRAM mode only.
The following procedure is used to clear memory completely.
It is possible to retain the data in specified areas or part of the Program
Memory. To retain the data in the TC and/or DR areas, press the appropriate
Section 3-5
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