Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 User Manual

410
Increment/Decrement Instructions Section 3-10
(@++(590)) is used, the specified word is incremented only when the execu-
tion condition has gone from OFF to ON.
The Equals Flag will be turned ON if the result is 0000, the Carry Flag will be
turned ON when a digit changes from F to 0, and the Negative Flag will be
turned ON when bit 15 of Wd is ON in the result.
Both the Equals Flag and the Carry Flag will be turned ON when the content
of Wd changes from FFFF to 0000.
Flags
Examples Operation of ++(590)
In the following example, the content of D00100 will be incremented by 1
every cycle as long as CIO 000000 is ON.
Operation of @++(590)
The up-differentiated variation is used in the following example, so the content
of D00100 will be incremented by 1 only when CIO 000000 has gone from
OFF to ON.
Wd Wd
Name Label Operation
Error Flag ER OFF
Equals
Flag
= ON if the content of Wd is 0000 after execution.
OFF in all other cases.
Carry Flag CY ON if a digit in Wd went from F to 0 during execution.
OFF in all other cases.
Negative
Flag
N ON if bit 15 of Wd is ON after execution.
OFF in all other cases.
D00100 D00100
0 0 1 9
Wd:
Increment Increment Increment Increment
0 0 1 A
: Execution of ++(590)
Incremented every cycle
while CIO 000000 is ON.
Wd:
@++
0 0 1 9
0 0 1 A
Increment
Increment
Wd: D00100 Wd: D00100
Incremented only for
up-differentiation.
: Execution of @++(590)

Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Specifications

General

Brand	Omron
Model	SYSMAC CJ - REFERENCE MANUAL 08-2008
Category	Controller
Language	English