Delta DVP-ES2 User Manual download pdf (Page 205)

100

101

3. Instruction Set

3-89

API Mnemonic Operands Function

D NEG P

2’s Complement

(Negation)

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

* * * * * ***

NEG, NEGP: 3 steps

DNEG, DNEGP: 5 steps

PULSE 16-bit 32-bit

ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2

Operands:

D: Device to store the operation result of 2’s Compliment

Explanations:

1. This instruction conducts operation of 2’s complement and can be used for converting a

negative BIN value into an absolute value.

2. This instruction is generally used in pulse execution mode (NEGP, DNEGP).

3. If operand D uses index F, only a 16-bit instruction is available.

Program Example 1:

When X0 goes from OFF to ON, the phase of each bit in D10 will be reversed (0→1, 1→0) and

then 1 will be added to the Least Significant Bit (LSB) of the register. Operation result will then be

stored in D10.

NEGP

D10

Program Example 2:

To obtain the absolute value of a negative value:

1. When MSB (b15) of D0 is “1”, M0 = ON. (D0 is a negative value).

2. When M0 = ON, the absolute value of D0 can be obtained by NEG instruction.

M1000

BON D0 K15M0

NEGP D0

Program Example 3:

Obtain the absolute value of the remainder of the subtraction. When X0 = ON,

a) If D0 > D2, M0 = ON.

b) If D0 = D2, M1 = ON.

c) If D0 < D2, M2 = ON.

d) D4 is then able to remain positive.

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Delta DVP-ES2 User Manual Page 205

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