Omron CPM1A operation manual Three-word Data Modification, Changing Timer, Counter SV, 3CH CHG?

D0002D0001D0000 0123 4567 89AB

Programming Console Operations Section 4-3

3.Press the CLR Key or the SHIFT and TR Keys to end the unsigned decimal display and return to normal monitoring.

CLR

c200 cL0020000 FFF0 0000^ OFF

4-3-17 Three-word Data Modification

This operation is used to change the contents of one or more of the 3 con- secutive words displayed in the Three-word Monitor operation. It is possible in MONITOR or PROGRAM mode only.

RUN	MONITOR	PROGRAM
No	OK	OK

!Caution Before changing the contents of I/O memory, be sure that the changes will not cause equipment to operate unexpectedly or dangerously. In particular, take care when changing the status of output bits. The PC continues to refresh I/O bits even if the PC is in PROGRAM mode, so devices connected to output points on the CPU Unit or Expansion I/O Units may operate unexpectedly.

1, 2, 3... 1. Monitor the status of the desired words according to the procedure described 4-3-14Three-word Monitor.

(Three-word monitor)

2.Press the CHG Key to begin 3-word data modification. The cursor will appear next to the contents of the leftmost word.

D0002 3CH CHG?

CHG 00123 4567 89AB

3.Input the new value for the leftmost word on the display and press the CHG Key if more changes will be made.

(Input the new value and press the WRITE Key to write the changes in memory if no more changes will be made.)

B		D0002	3CH	CHG?
1	CHG	0001	4567	89AB

4.Input the new value for the middle word on the display and press the CHG Key if the rightmost word will be changed. Input the new value and press the WRITE Key to write the changes in memory if the rightmost word will not be changed. (In this case, it will not.)

C D E

2 3 4 WRITE

D0002D0001D0000 0001 0234 89AB

Note If the CLR Key is pressed before the WRITE Key, the operation will be cancelled and the 3-word monitor display will return without any changes in data memory.

4-3-18 Changing Timer, Counter SV

There are two operations that can be used to change the SV of a timer or counter. They are possible in MONITOR or PROGRAM mode only. In MON- ITOR mode, the SV can be changed while the program is being executed.

RUN	MONITOR	PROGRAM
No	OK	OK

The timer or counter SV can be changed either by inputting a new value or by incrementing or decrementing the current SV.

95