Mitsubishi Electric MELSEC FX Series - Page 150

7 Applied Instructions
7.2 Move and Compare
148
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
Cautions
1) Some restrictions to applicable devices
S1:The FX
3U and FX3UC PLCs only are applicable. Not indexed (V,Z).
S2:The FX
3U, FX3UC and FX3G PLCs only are applicable.
S3:The FX
3U and FX3UC PLCs only are applicable.
2) When handling array data or 32-bit data in a structured program, a 16-bit device cannot be specified
directly as in the case of a simple project. Use a label to handle array data or 32-bit data.
A 32-bit counter can be specified directly as it is a 32-bit long device.
Use a global label to specify a device.
3) The FX
0, FX0S or FX0N PLC does not support the pulse operation type instructions.
To execute pulse operation, make the instruction execution condition pulse type.
4) From the device specified as , three devices are occupied.
Be sure not to use those devices in another control.
5) The lower comparison value specified by should be smaller than the upper comparison value
specified by .
• When the lower comparison value is smaller than the upper comparison value
• When the lower comparison value is larger than the upper comparison value
Turns ON in the case of "K100
> CN30 (current value)".
Turns ON in the case of "K100
CN30 (current value) K120"
Turns ON in the case of "K120
< CN30 (current value)".
ZCP
EN
s1
s2
ENO
d
s3
X000
K100
K120
Var_ZCP1
*1
M3
M4
M5
CN30
X000
99
100
119
120
121
CN30
M3
M4
M5
…
*1 Var_ZCP1 is a global label and is defined as M3.
X000
99
100
119
120
121
CN30
M3
M4
M5
It is handled as K120 .
Turns ON in the case of "K120
> CN30 (current value)".
Turns ON in the case of "K120
= CN30 (current value)".
Turns ON in the case of "K120
< CN30 (current value)".
ZCP
EN
s1
s2
ENO
d
s3
X000
K120
K100
Var_ZCP1
*1
M3
M4
M5
CN30
…
s1
*1 Var_ZCP1 is a global label and is defined as M3.