Delta DVP-ES2 User Manual download pdf (Page 193)

100

101

3. Instruction Set

3-77

API Mnemonic Operands Function

D SUB P

Subtraction

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

* ** * * * * * ***

* * * * * ***

SUB, SUBP: 7 steps

DSUB, DSUBP: 13 steps

PULSE 16-bit 32-bit

ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2

Operands:

: Minuend S

: Subtrahend D: Remainder

Explanations:

1. This instruction subtracts S

and S

in BIN format and stores the result in D

2. The MSB is the sign bit. 0 indicates positive and 1 indicates negative. All calculation is

algebraically processed.

3. If S

, S

and D use device F, only 16-bit instruction is applicable.

4. Flags: M1020 (Zero flag), M1021 (Borrow flag), M1022 (Carry flag). The flag operations of

ADD instruction can also be applied to the subtract instruction.

Program Example 1:

In 16-bit BIN subtraction:

When X0 = ON, the content in D0 will minus the content in D10 and the results will be stored in

D20

SUB

D0 D10 D20

Program Example 2:

In 32-bit BIN subtraction:

When X10 = ON, the content in (D31, D30) will minus the content in (D41, D40) and the results will

be stored in (D51, D50). D30, D40 and D50 are low word; D31, D41 and D51 are high word

X20

DSUB

D30 D40 D50

(D31, D30) − (D41, D40) = (D51, D50)

1 2 ... 188 189 190 191 192 193 194 195 196 197 198 ... 701 702

Delta DVP-ES2 User Manual Page 193

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