Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 169

■ANDPI, ANDFI
• ANDPI is a rising edge pulse NOT series connection instruction and ANDFI is a falling edge pulse NOT series connection
instruction. These instructions perform an AND operation with the previous operation result, and output the operation result.
The following table lists the on/off information used by the ANDPI and ANDFI instructions.
Device specified by ANDPI or ANDFI
Bit device
OffOn
Off
On
OnOff
• If the ANDPI instruction is used in the program written in ST or FBD/LD language, ENO turns on when the result of AND
operation between EN and the rising edge of the specified bit device (s) is not on. EN will not be an execution condition.
• If the ANDFI instruction is used in the program written in ST or FBD/LD language, ENO turns on when the result of AND
operation between EN and the falling edge of the specified bit device (s) is not on. EN will not be an execution condition.
■ORPI, ORFI
• ORPI is a rising edge pulse NOT parallel connection instruction and ORFI is a falling edge pulse NOT parallel connection
instruction. These instructions perform an OR operation with the previous operation result, and output the operation result.
The following table lists the on/off information used by the ORPI and ORFI instructions.
Device specified by ORPI or ORFI
Bit device
OffOn
Off
On
OnOff
• If the ORPI instruction is used in the program written in ST or FBD/LD language, ENO turns when the result of OR
operation between EN and the rising edge of the specified bit device (s) is not on. EN will not be an execution condition.
• If the ORFI instruction is used in the program written in ST or FBD/LD language, ENO turns when the result of OR
operation between EN and the falling edge of the specified bit device (s) is not on. EN will not be an execution condition.
Operation error
There is no operation error.
Bit-specified word device
01
0
1
10
Bit-specified word device
01
0
1
10
ANDPI status ANDFI status
Off On
On On
On On
On Off
ORPI status ORFI status
Off On
On On
On On
On Off
5 SEQUENCE INSTRUCTIONS
5.1 Contact Instructions
5
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