Delta DVP-ES2 - Page 173

DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
3-52
API Mnemonic Operands Function
Controllers
ES2/EX2/
EC5
SS2
SA2
SE
SX2
10 D CMP P Compare
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX KnY KnM KnS T C D E F
CMP, CMPP: 7 steps
DCMP, DCMPP: 13 steps
S
1
*
*
*
*
*
*
*
*
*
*
*
S
2
*
*
*
*
*
*
*
*
*
*
*
D
*
*
*
PULSE
16-bit
32-bit
ES2/EX2
/EC5
SS2
SA2
SE
SX2
ES2/EX2
/EC5
SS2
SA2
SE
SX2
ES2/EX2
/EC5
SS2
SA2
SE
SX2
Operands:
S
1
: Comparison Value 1 S
2
: Comparison Value 2 D: Comparison result
Explanations:
1. The contents of S
1
and S
2
are compared and D stores the comparison result.
2. The comparison values are signed binary values. If b15=1 in 16-bit instruction or b31=1 in
32-bit instruction, the comparison will regard the value as a negative binary value.
3. Operand D occupies 3 continuous devices. D, D +1, D +2 hold the comparison results,
D = ON if S
1
> S
2
, D +1 = ON if S
1
= S
2
, D +2 = ON if S
1
< S
2
4. If operand S
1
, S
2
use index register F, only 16-bit instruction is available.
Program example:
1. If D is set as Y0, then Y0, Y1, Y2 will display the comparison results as shown below.
2. When X20 = ON, CMP instruction is executed and one of Y0, Y1, Y2 will be ON. When X20 =
OFF, CMP instruction is not executed and Y0, Y1, Y2 remain in their previous condition.
X20
Y0
Y1
Y2
CMP
K10 D10 Y0
If K10>D10, Y0 = On
If K10=D10, Y1 = On
If K10<D10, Y2= On
3. Use RST or ZRST instruction to reset the comparison result.
X10
RST
M0
RST
RST
M1
M2
X10
ZRST
M0
M2