Mitsubishi MELSEC iQ-F FX5 series Programming Manual page 160

• A constant can be directly specified in (s1).
(s1) 32000 (BIN)
• The following table lists the comparison operation result of each instruction.
Instruction symbol
BKCMP=(P)(_U)
BKCMP<>(P)(_U)
BKCMP>(P)(_U)
BKCMP<=(P)(_U)
BKCMP<(P)(_U)
BKCMP>=(P)(_U)
BKCMP=(P)(_U)
BKCMP<>(P)(_U)
BKCMP>(P)(_U)
BKCMP<=(P)(_U)
BKCMP<(P)(_U)
BKCMP>=(P)(_U)
• When the comparison operation result is all ON (1) in all (n) point(s) starting from (d), SM704 and SM8090 (block
comparison signal) turns ON.
Operation error
Error code Description
(SD0/SD8067)
2820 The (n) point(s) starting from the device specified by (s1), (s2), and (d) exceeds said device.
2821 When (d) specifies "D.b", the data register of (d) and the (n) point(s) of data starting from the device specified by (s1) overlap.
When (d) specifies "D.b", the data register of (d) and the (n) point(s) of data starting from the device specified by (s2) overlap.
6 BASIC INSTRUCTIONS
158
6.1 Comparison Operation Instructions
∙∙∙
b15
(s2) 32000 (BIN)
(s2)+1 4321 (BIN)
(s2)+2 32000 (BIN)
=
(s2)+(n-2) 1234 (BIN)
(s2)+(n-1)
5678 (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)
Operation result
b0
(d) ON
(d)+1 OFF
(d)+2 ON
(n)
(d)+(n-2) OFF
(d)+(n-1)
OFF
(1)
(0)
(1)
(n)
(0)
(0)
Result
On(1)
Off(0)