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5 SEQUENCE INSTRUCTIONS
5.1 Contact Instructions
Pulse NOT operation start, pulse NOT series connection, pulse
NOT parallel connection
LDPI, LDFI, ANDPI, ANDFI, ORPI, ORFI
• LDPI: Rising edge pulse NOT operation start instruction
This instruction becomes conductive (ON) at OFF, ON and the falling edge (ON to OFF) of the bit device specified by (s).
• LDFI: Falling edge pulse NOT operation start instruction
This instruction becomes conductive (ON) at the rising edge (OFF to ON), OFF and ON of the bit device specified by (s).
• ANDPI: Rising edge pulse NOT series connection instruction/ANDFI: Falling edge pulse NOT series connection instruction
This instruction ANDs the bit devices specified by (s) with the operation result so far, and uses the result as the operation
result.
• ORPI: Rising edge pulse NOT parallel connection instruction/ORFI: Falling edge pulse NOT parallel connection instruction
This instruction ORs the bit devices 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:=LDPI(EN,s);
ENO:=LDFI(EN,s);
ENO:=ANDPI(EN,s);
ENO:=ANDFI(EN,s);
ENO:=ORPI(EN,s);
ENO:=ORFI(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)
LDPI
LDFI
ANDPI
ANDFI
ORPI
ORFI
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