Mitsubishi Electric M800VW Series Programming Manual page 149

M800V/M80V Series PLC Programming Manual (1/2)
7 Basic Instructions
7.2 Connection Instructions
LDP, LDF, ANDP, ANDF, ORP, ORF: Pulse operation start, pulse series connection, pulse parallel con-
nection
Setting
Bit device
data
X Y M L F
S
○ ○ ○ ○ ○
Instruction symbol Execution condition
LDP
LDF
ANDP
ANDF
ORP
ORF
 Setting data
Setting data
S Devices used as contacts
 Functions
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).
X0
MOV
X0
A ladder using LDP instruction
 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.
IB-1501667-B
Usable devices
B SB T SM V T C
○ ○ ○ ○
X1/D0.1
X1/D0.1
X3/D0.3
X3/D0.3
Meaning
X0
K0 D0
X0
M0
A ladder not using an LDP instruction
Con-
Word device
stant
D R/ZR W SW SD Z K
○ ○ ○ ○ ○
Bit device number / Bit designation of word device
X2/D0.2
X2/D0.2
MOVP K0 D0
PLS M0
128
Digit
Pointer designa- Index
tion
H P
○
Data type
Bit