Mitsubishi Electric MELSEC FX Series Structured Programming Manual page 145

FXCPU Structured Programming Manual
(Basic & Applied Instruction)
3. Applicable devices
Bit Devices
Operand
System User
type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
: Refer to "Cautions".
Function and operation explanation
1. 16-bit operation(CMP, CMPP)
The comparison value specified by
each other. According to the result (smaller, equal or larger), any of the three points of the devices specified
by turns on.
• The source data specified by
• Comparison is executed algebraically. Example: -10 < 2
Command input
Comparison
value data
Comparison
source data
M100
M101
M102
Even if the command input turns OFF and CMP instruction is not executed,
d to d +2 latch the status just before the command input turns OFF from ON.
*1 This defines the head bit device that stores the comparison result. (Defines M100)
Word Devices
System
Digit Specification
1
and the comparison source specified by
and are handled as BIN (binary) values.
CMP
EN ENO
s1 d *1
Label1
(M100)
s2
Turns on in the case of s1 >
Turns on in the case of =
s1
Turns on in the case of s1 <
Special
Index
User Unit
V Z Modifier
2 3
2 3
Command
input
s2
48
s2
d
Latched
s2
d +1
s2
d +2
7 Applied Instructions
7.2 Move and Compare
Others
Real Character
Constant Pointer
Number String
K H E " "
are compared with
51
50
49
s1
Latched
Latched
143
1
P
2
3
4
5
6
7
8
A