Mitsubishi Electric FX3G SERIES Programming Manual page 196
Programmable controllers
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Also See for FX3G SERIES:
- User manual (532 pages) ,
- Hardware manual (8 pages) ,
- Quick start manual (2 pages)
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FX
/FX
/FX
Series Programmable Controllers
3G
3U
3UC
Programming Manual - Basic & Applied Instruction Edition
2. LDF, ANDF, and ORF instructions (initial logical operation of falling/trailing edge pulse, serial
connection of falling/trailing edge pulse, and parallel connection of falling/trailing edge pulse)
Circuit program
LDF instruction
X000
X001
ORF instruction
M8000
X002
RUN monitor
Timing chart
LDF instruction
ORF instruction
ANDF instruction
In the example shown above, M0 or M1 is ON during only one operation cycle when X000 to X002 turn OFF from ON.
3. Bit specification of a data register (D)
A bit in data register (D) can be specified as a device used in LDP, LDF, ANDP, ANDF, ORP and ORF instructions.
Circuit program
D0.3
*1.
This function is supported only in FX
194
M0
ANDF instruction
M1
ON
X000
X001
M0
M8000
ON
X002
ON during
one opera-
M1
tion cycle
List program
0000
0003
Y000
3U
List program
0000 LDF
X000
0002 ORF
X001
0004 OUT
M0
0005 LD
M8000
0006 ANDF X002
0008 OUT
M1
ON
ON
ON during
one opera-
tion cycle
ON
ON
ON
*1
When specifying a bit in a data register, input "."
after a data register (D) number, and then input a
bit number (0 to F) consecutively.
Only 16-bit data registers are available.
LDP
D0.3
Specify a bit number as "0, 1, 2, ... 9, A, B, ... F"
OUT
Y000
from the least significant bit.
Example: In the example shown on the left, LDP
/FX
PLCs.
3UC
7 Basic Instruction
7.5 LDP, LDF, ANDP, ANDF, ORP, ORF
ON
contact turns ON (becomes
conductive) or OFF (becomes non-
conductive) when bit 3 of D0 turns ON
or OFF.
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