Mitsubishi Electric MELSEC-Q/L - BIN 32-Bit Data Comparisons (Small, Match, Large)

6 BASIC INSTRUCTIONS
6.1 Comparison Operation Instructions
207
6
BIN 32-bit data comparisons (small, match, large)
DCMP(P)
Processing details
• One of (D), (D)+1, and (D)+2 turns on depending on the results (small, match, large) after comparison data (S1), (S1)+1
and comparison data (S2), (S2)+1 are compared.
• When the contact turns off, (D) to (D)+2 hold the conditions immediately before the contact turns on and off.
Operation error
• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.
Program example
• Program that compares the values of D0 and D1 with the constant value K100
• LCPU: The serial number (first five digits) is "16042" or later.
• QnUDVCPU: The serial number (first five digits) is "16043" or later.
(S1): Comparison data or start number of the devices where the comparison data is stored (BIN 32 bits)
(S2): Comparison data or start number of the devices where the comparison data is stored (BIN 32 bits)
(D): Head number of the devices where the comparison result will be stored (bits)
Setting
data
Internal device R, ZR J\ U\G Zn Constant
K, H
Others
Bit Word Bit Word
(S1)   
(S2)   
(D)   
Error
code
Error details Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4101 The range of 3 points from the device specified in (D) exceeds the range of
the corresponding device.

Basic
High
performance
Process Redundant Universal
Ver.
LCPU
Ver.
DS2S1
DCMPP
DCMP
DCMPP
DCMP
DS2S1
Command
Command
DCMP
Contact
S1 S2 D
S1 S2
S1 S2
>
=
<
+1
+1
+1
[
[
[
[
[
[
]
]
]
+1
+1
+1
]
]
]
,
,
,
,
,
,S2S1
Turns on when
Turns on when
Turns on when
S2
S2
S2
S1
S1
S1
D
D
D+2
+1
Compare K100 with D0 and D1.
M0 turns on when K100 > D0 and D1.
M1 turns on when K100 = D0 and D1.
M2 turns on when K100 < D0 and D1.