5 SEQUENCE INSTRUCTIONS
5.1 Contact Instructions
165
5
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
This instruction turns on when the specified device is off, on, or at the falling edge (on to off).
• LDFI: Falling edge pulse NOT operation start
This instruction turns on when the specified bit device is at the rising edge (off to on), off, or on.
• ANDPI: Rising edge pulse NOT series connection, ANDFI: Falling edge pulse NOT series connection
These instructions perform an AND operation with the previous operation result.
• ORPI: Rising edge pulse NOT parallel connection, ORFI: Falling edge pulse NOT parallel connection
These instructions perform an OR operation with the previous operation result.
■
Execution condition
Ladder
ST
ENO:=LDPI(EN,s);
ENO:=LDFI(EN,s);
ENO:=ANDPI(EN,s);
ENO:=ANDFI(EN,s);
ENO:=ORPI(EN,s);
ENO:=ORFI(EN,s);
FBD/LD
Instruction
Execution condition
LDPI
LDFI
ANDPI
ANDFI
ORPI
ORFI
Every scan
RnCPU RnENCPU
RnSFCPU RnSFCPU
RnPCPU
RnPCPU
(Standard)
(Safety)
(Redundant)
(Process)
(s)
(s)
(s)
(s)
(s)
(s)
LDPI
LDFI
ANDPI
ANDFI
ORPI
ORFI
EN
ENO
s
Summary of Contents for MELSEC iQ-R Series
Page 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Page 34: ...32 MEMO ...
Page 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Page 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Page 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Page 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Page 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Page 2109: ......