Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario descargar pdf (Pagina 152)

Appendix D Use of Application Instructions|DOP-EXIO Series

Revision March, 2008, Doc. Name: 2007PDD23000014 D-71

Mnemonic Operands Function

LD※ D

Contact Logical Operation LD

※

Bit Devices Word Devices

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

          

y Note: : =※ , >, <, <>, ≦, ≧

16-bit instruction (5 Steps)

LD※

Continuous

execution

- -

32-bit instruction (9 Steps)

DLD※

Continuous

execution

- -

y Flags: None

Operands:

: Data source device 1

: Data source device 2

Explanations:

1. This instruction compares the content in S

and S

. If the result is not “equal”, the continuity of

the instruction is enabled. If the result is “equal”, the continuity of the instruction is disabled.

2. LD

※ (=, >, <, <>, ≦, ≧) instruction is used for direct connection with BUS.

16 -bit instruction 32 -bit instruction Continuity condition

No-continuity

condition

LD＝ DLD＝

＝

≠

LD＞ DLD＞

＞

≦

LD＜ DLD＜

＜

≧

LD＜＞ DLD＜＞

≠

＝

LD＜＝ DLD＜＝

≦

＞

LD＞＝ DLD＞＝

≧

＜

3. If the most left bit of S

and S

(16-bit instruction: b15、32-bit instruction: b31) is “1”, the compare

value will be regarded as the negative value for comparison.

4. When 32-bit counters (C200 ~) are used in this instruction for comparison, make sure to adopt

32-bit instruction (DLD

※). If 16-bit instructions (LD※) is adopted, a “program error” will occur

and the ERROR indicator on the panel will flash and the connecting controller can not run..

Program Example:

1. When the value of C0 is equal to the value of K200, Y10 = On.

2. When the value of D200 is higher than -29 and X1 = On, Y11 = On will be retained.

3. When the value of C200 is lower than 678,493 and M3 = On, M50 = On.

1 2 ... 147 148 149 150 151 152 153 154 155 156 157

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