Mitsubishi Electric MELSEC-Q/L - Pulse Operation Start, Pulse Series Connection, Pulse Parallel Connection

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5 SEQUENCE INSTRUCTIONS
5.1 Contact Instructions
Pulse operation start, pulse series connection, pulse parallel
connection
LDP, LDF, ANDP, ANDF, ORP, ORF
Processing details
■LDP, LDF
• LDP is the rising edge pulse operation start instruction, and is ON only at the rising edge of the designated bit device (when
it goes from OFF to ON). If a word device has been designated, it is ON only when the designated bit changes from 0 to 1.
In cases where there is only an LDP instruction, it acts identically to instructions for the creation of a pulse that are executed
during ON (P).
• LDF is the falling edge pulse operation start instruction, and is ON only at the falling edge of the designated bit device
(when it goes from ON to OFF). If a word device has been designated, it is ON only when the designated bit changes from
1 to 0.
(S): Devices used as contacts (bits)
Setting
data
Internal device R, ZR J\ U\G Zn Constant Others
DX
Bit Word Bit Word
(S)  
Basic
Process
High
performance
Redundant Universal LCPU
X1/D0.1
X1/D0.1
Bit device number / Word device bit designation ( )
X2/D0.2
X2/D0.2
X3/D0.3
X3/D0.3
S
LDP
LDF
ORP
ANDP
ANDF
ORF
X0
D0K0MOV
M0
X0
Ladder using an LDP instruction
X0
D0K0MOVP
X0
Ladder not using an LDP instruction
M0
PLS