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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
• LDP: Rising edge pulse operation start instruction
This becomes conductive (ON) only at the rising edge (OFF to ON) of the bit device specified by (s).
• LDF: Falling edge pulse operation start instruction
This becomes conductive (ON) only at the falling edge (ON to OFF) of the bit device specified by (s).
• ANDP: Rising edge pulse series connection instruction/ANDF: Falling edge pulse series connection instruction
This instruction ANDs the bit device specified by (s) with the operation result so far, and uses the result as the operation
result.
• ORP: Rising edge pulse parallel connection/ORF: Falling edge pulse parallel connection
This instruction ORs the bit device specified by (s) with the operation result so far, and uses the result as the operation result.
■Descriptions, ranges, and data types
■Applicable devices
*1 T, ST, C cannot be used.
Ladder diagram Structured text
ENO:=LDP(EN,s);
ENO:=LDF(EN,s);
ENO:=ANDP(EN,s);
ENO:=ANDF(EN,s);
ENO:=ORP(EN,s);
ENO:=ORF(EN,s);
Operand Remarks Range Data type Data type (label)
(s) Device used as contact Bit ANY_BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
(DX)
X, Y, M, L,
SM, F, B, SB
U\G T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U\G Z LC LZ K, H E $
(s)
*1
(s)
(s)
(s)
(s)
(s)
(s)
LDP
LDF
ANDP
ANDF
ORP
ORF
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