Delta DVP-20PM

5 Applied Instructions and Basic Usage
DVP-20PM Application Manual
5-129
API
Applicable model
20PM
224~
230
D
D
LD※
Comparing values

Bit device Word device
X Y M S K H KnX KnY KnM KnS T C D V Z
S
1
＊ ＊
＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊
S
2
＊ ＊
＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊
 Note: ※ represents =, >, <, <>, ≦ , or ≧ .
Please refer to specifications for more information about device
ranges.
16-bit instruction (5 steps)
LD※
Continuity
instruction
－ －
32-bit instruction (7 steps)
DLD※
Continuity
instruction
－ －
 Flag: None
Explanation
 The instruction is used t
o compare the value in S
1
with that in S
2
. Take the
instruction LD= for instance. If the comparison result is that the value in S
1
is
equal to that in S
2
, the condition of the instruction is met. If the comparison
result is that the value in S
1
is not equal to that in S
2
, the condition of the
instruction is not met.
 S
1
: Source device 1; S
2
: Source device 2
 The instruction LD※ can be connect
ed to a busbar directly.
API No.
16-bit
instruction
32-bit
instruction
ON OFF
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
 If a 32-bit counter is used, the 32-bit insturciton DLD※ must be used. If a 32-bit
counter and the 16-bit instruction LD※ are used, ,a program error will occur,
and the ERROR LED indicator on the DVP-20PM series motion controller used
will blink. (C200~C255 are 32-bit counters.)
Example
 When the value in D200 is greater t
han K-30, and X1 is ON, Y11 is set to ON.
 When the value in C10 is equal to K200, Y10 is ON.
 When the value in C200 is less than K678,493, or when M3 is ON, M50 is ON.
LD=
K200 C10
DLD>
K678493 C200
M3
Y10
LD>
D200 K-30
X1
SET Y11
M50