Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 235

■Applicable devices
Operand Bit
X, Y, M, L, J\
SM, F, B, SB,
FX, FY
(s1)  
 
(s2)
(d)  
 
(n)
Processing details
• These instructions compare the (n) points of 32-bit binary data from the device specified by (s1) with the (n) points of 32-bit
binary data from the device specified by (s2), and stores the operation result in the device specified by (d) and later.
• If the comparison condition is satisfied, the relevant device specified by (d) turns on; otherwise, the device turns off.
∙∙∙
b31
(s1)+1, (s1)
1090
(s1)+3, (s1)+2
2080
(s1)+5, (s1)+4
5060
(s1)+2(n)-1, (s1)+2(n)-2 1106
• Comparison operation is performed in units of 32 bits.
• A constant can be specified for (s1).
b31 ∙∙∙ b0
(s1)+1, (s1)
32800 (BIN)
• Specify (d) outside the device ranges for (n) points from the device specified by (s1) and those from the device specified by
(s2).
• The following table lists the comparison operation results of each instruction.
Instruction symbol (ladder, FBD/LD)
DBKCMP=(P)(_U), DBKCMP_EQ(P)(_U)
DBKCMP<>(P)(_U), DBKCMP_NE(P)(_U)
DBKCMP>(P)(_U), DBKCMP_GT(P)(_U)
DBKCMP<=(P)(_U), DBKCMP_LE(P)(_U)
DBKCMP<(P)(_U), DBKCMP_LT(P)(_U)
DBKCMP>=(P)(_U), DBKCMP_GE(P)(_U)
DBKCMP=(P)(_U), DBKCMP_EQ(P)(_U)
DBKCMP<>(P)(_U), DBKCMP_NE(P)(_U)
DBKCMP>(P)(_U), DBKCMP_GT(P)(_U)
DBKCMP<=(P)(_U), DBKCMP_LE(P)(_U)
DBKCMP<(P)(_U), DBKCMP_LT(P)(_U)
DBKCMP>=(P)(_U), DBKCMP_GE(P)(_U)
• When the comparison operation results stored in (n) points from the device specified by (d) are all on (1), SM704 turns on.
• If (n) is 0, no processing is performed.
Word
T, ST, C, D, W, U\G, J\,
SD, SW, FD, R, U3E\(H)G
ZR, RD
 
 
 
 
b0
(s2)+1,
(BIN)
(s2)+3,
(BIN)
(s2)+5,
(BIN) (n) =
(s2)+2(n)-1,
(BIN)
b31
(s2)+1, (s2)
32700
(s2)+3, (s2)+2
40000
(s2)+5, (s2)+4
32800
>=
(s2)+2(n)-1, (s2)+2(n)-2
2147400 (BIN)
Condition
(s1)=(s2)
(s1)(s2)
(s1)>(s2)
(s1)(s2)
(s1)<(s2)
(s1)(s2)
(s1)(s2)
(s1)=(s2)
(s1)(s2)
(s1)>(s2)
(s1)(s2)
(s1)<(s2)
Double word Indirect
Z LT, LST, LZ
LC
  
  
  
  
b31 ∙∙∙ b0
(s2)
1000 (BIN)
(s2)+2 2000 (BIN)
(s2)+4
(n)
5060 (BIN)
(s2)+2(n)-2
1106 (BIN)
∙∙∙ b0
(BIN)
(d)
(BIN)
(d)+1
(BIN) (n)
(d)+2
(d)+(n)-1
6.1 Comparison Operation Instructions
Constant
specification
K, E $
H
   
   
   
   
(0)
(d) OFF
(0)
(d)+1 OFF
(d)+2 ON (1)
(d)+(n)-1 ON (1)
ON (1)
(0)
OFF
(1) (n)
ON
(0)
OFF
Result
On (1)
Off (0)
6 BASIC INSTRUCTIONS
Others




(n)
6
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