Delta DVP-SA2

3. Instruction Set
3-561
API Mnemonic Operands Function
Controllers
ES2/EX2
/EC5
SS2
SA2
SE
SX2
224~
230
D
LD※
Contact Type Comparison
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX KnY KnM KnS T C D E F
LD※: 5 steps
DLD※: 9 steps
S
1
*
*
*
*
*
*
*
*
*
*
*
S
2
*
*
*
*
*
*
*
*
*
*
*
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
: Source device 1 S
2
: Source device 2
Explanations:
1. This instruction compares the content in S
1
and S
2
. Take API224 (LD=) for example, if the result
is “=”, the continuity of the instruction is enabled. If the result is “≠”, the continuity of the
instruction is disabled.
LD※ (※: =, >, <, <>, ≤, ≥) instruction is used for direct connection with left hand bus bar.
API No.
16 -bit
instruction
32 -bit
instruction
Continuity
condition
Discontinuity
condition
224
LD＝
DLD＝
S
1
＝S
2
S
1
≠S
2
225
LD
＞
DLD
＞
S
1
＞
S
2
S
1
≦S
2
226
LD＜
DLD＜
S
1
＜S
2
S
1
≧S
2
228
LD
＜＞
DLD
＜＞
S
1
≠S
2
S
1
＝
S
2
229
LD＜＝
DLD＜＝
S
1
≦S
2
S
1
＞S
2
230
LD
＞＝
DLD
＞＝
S
1
≧S
2
S
1
＜
S
2
When the MSB (16-bit instruction: b15, 32-bit instruction: b31) of S
1
and S
2
is 1, the comparison
value will be viewed as a negative value in comparison.
When 32-bit counters (C200 ~ C254) are used in this instruction, make sure to adopt 32-bit
instruction (DLD※). If 16-bit instruction (LD※) is adopted, a “program error” will occur and the
ERROR indicator on the MPU panel will flash.
Program Example:
1. When the content in C10 = K200, Y20 = ON.
When the content in D200 > K-30 and X1 = ON, Y21 = ON and latched.
LD=
K200 C10
Y20
LD<=
D200 K-30
X1
SET
Y21