KEYENCE Visual KV Series - Manual (Page 195)

2.4 Instruction Details
1
2
3-171 Chapter 2 Instructions
Example
Coding
Description
• Each time input relay 0000 turns from OFF to ON, the contents of DM0000 are
transferred to the internal register. The COM instruction inverts the status of each
bit and transfers the result to DM0001.
• Special utility relay 2010 turns ON when the result is "0".
• The following shows the case when DM0000 is "$5F5F".
Note:
When an every-scan type COM instruction is used, the status of bits are inverted
every scan time while input relay 0000 is ON.
Use @COM, a differentiation type instruction, to execute the instruction only once
when input relay 0000 turns ON, as shown in the example.
Operands
Key operation
Arithmetic flag
2009 No change
2010 Turns ON when the internal register is "0" after a COM operation. Turns
OFF at other times.
2011 No change
2012 No change
COM:
@COM:
Inverts contents of each bit in internal
register.
@
#,$
FUN
FUN
RES
0
ANB
5
RES
0
ANB
5
COM
COM
Complement
(Bit inversion)
0000
COM
DM0001
STA
DM0000
LDA
Line No. Instruction Operand
0000 LD 0000
0001 @LDA DM0000
0002 CON
0003 @COM
0004 CON
0005 @STA DM0001
0 1 0 1 1 1 1 1 0 1 0 1 1 1 1 1
DM0001
DM0000 = $5F5F
= $A0A0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0
D 15 D 14 D 13 D 12 D 11 D 10 D 9 D 8 D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0
COM instruction Bit inversion
0000 DM0000
LDA COM
DM0001
STA
@
#,$
FUN
FUN
RES
0
ANB
5
ENT
R-SRCH
ENT
R-SRCH
:
:
COM / @COM
KVNKA Chap 02_4dP.p65 08.3.11, 0:03 PM 171