Mitsubishi Electronics FX3G User Manual

Page of 964
194
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
 Series
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.5 LDP, LDF, ANDP, ANDF, ORP, ORF
7.5
LDP, LDF, ANDP, ANDF, ORP, ORF
Outline
LDP, ANDP, and ORP instructions for contacts detect the rising edge, and become active during one operation cycle
only at the rising edge of a specified bit device (that is, when the bit device turns from OFF to ON).
Contact instructions LDF, ANDF and ORF detect the falling edge, and become active during one operation cycle only
at the falling edge of a specified bit device (that is, when the bit device turns from ON to OFF).
1. Instruction format
→ For the number of instruction steps, refer to Section 7.16.
2. Applicable devices
S: This function is supported only in FX
3U
/FX
3UC
 PLCs.
Instruc-
tion
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special 
Unit
Index
Con-
stant
Real 
Number
Charac-
ter String
Pointer
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
V Z Modify K H
E
" "
P
LDP
S
LDF
S
ANDP
S
ANDF
S
ORP
S
ORF
S
LDP
Load Pulse
Basic Instruction
LDP
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
LDF
Load Falling Pulse
Basic Instruction
LDF
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
ANDP
AND Pulse
Basic Instruction
ANDP
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
ANDF
AND Falling Pulse
Basic Instruction
ANDF
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
ORP
OR Pulse
Basic Instruction
ORP
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
ORF
OR Falling Pulse
Basic Instruction
ORF
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition