6 SEQUENCE INSTRUCTIONS
6.1 Contact Instructions
109
6
Processing details
■
LDPI, LDFI
• The LDPI instruction is the rising edge pulse NOT operation start instruction, and becomes conductive (ON) at OFF, ON
and the falling edge (ON to OFF) of the specified bit device. When word devices are specified by bits, this instruction
becomes conductive when the status of the specified bit is 0, 1, and when it changes 1
0.
• The LDFI instruction is the falling edge pulse NOT operation start instruction, and becomes conductive (ON) at the rising
edge (OFF to ON), OFF and ON of the specified bit device. When word devices are specified by bits, this instruction
becomes conductive (ON) when the status of the specified bit is 0, 1, and when it changes 0
1. The table below shows the
ON/OFF information used by these instructions.
■
ANDPI, ANDFI
• The ANDPI instruction is the rising edge pulse NOT series connection instruction, and the ANDFI instruction is the falling
edge pulse NOT series connection instruction. These instructions AND with the operation result so far, and use the result
as the operation result. The table below shows the ON/OFF information used by these instructions.
■
ORPI, ORFI
• The ORPI instruction is the rising edge pulse NOT parallel connection instruction, and the ORFI instruction is the falling
edge pulse NOT parallel connection instruction. These instructions OR with the operation result so far, and use the result
as the operation result. The table below shows the ON/OFF information used by these instructions.
Operation error
There is no operation error.
Device specified by LDPI, LDFI
LDPI status
LDFI status
Bit device
Bit specification of word
device
OFF to ON
0
1
OFF
ON
OFF
0
ON
ON
ON
1
ON
ON
ON to OFF
1
0
ON
OFF
Device specified by ANDPI, ANDFI
ANDPI status
ANDFI status
Bit device
Bit specification of word
device
OFF to ON
0
1
OFF
ON
OFF
0
ON
ON
ON
1
ON
ON
ON to OFF
1
0
ON
OFF
Device specified by ORPI, ORFI
ORPI status
ORFI status
Bit device
Bit specification of word
device
OFF to ON
0
1
OFF
ON
OFF
0
ON
ON
ON
1
ON
ON
ON to OFF
1
0
ON
OFF
Summary of Contents for MELSEC iQ-F FX5
Page 1: ...MELSEC iQ F FX5 Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 17: ...15 CONTENTS ...
Page 24: ...22 MEMO ...
Page 1050: ...1048 26 TIME DATA FUNCTIONS 26 4 Division MEMO ...
Page 1068: ...1066 29 COUNTER FUNCTION BLOCKS 29 4 Counter Function Block Operation error There is no error ...
Page 1107: ...I 1105 MEMO ...
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