Delta DVP-ES2 User Manual download pdf (Page 176)

100

101

DVP-ES2/SA2/SS2/SA2/SX2/SE Operation Manual - Programming

3-60

API Mnemonic Operands Function

D CMP P

Compare

Controllers

ES2/EX2 SS2

SA2

SX2

Bit Devices Word devices Program Steps Type

X Y M S K H KnX KnY KnM KnS T C D E F

* * * * * * * * ***

D * * *

CMP, CMPP: 7 steps

DCMP, DCMPP: 13 steps

PULSE 16-bit 32-bit

ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2

Operands:

: Comparison Value 1 S

: Comparison Value 2 D: Comparison result

Explanations:

1. The contents of S

and S

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

> S

, D +1 = ON if S

= S

, D +2 = ON if S

< S

4. If operand S

, S

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

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

X10

ZRST

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Delta DVP-ES2 User Manual Page 176

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