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2 CPU MODULE INSTRUCTIONS
2.1 Sequence Instructions
2 CPU MODULE INSTRUCTIONS
The following table summarizes how to read the instruction lists.
2.1 Sequence Instructions
Contact instructions
■Operation start, series connection, parallel connection
■Pulse operation start, pulse series connection, pulse parallel connection
Item Description
Instruction symbol An instruction name
Processing details An overview of the instruction
Reference Section where detailed information is described
Instruction symbol Processing details Reference
LD Outputs the on/off information of the specified device as the operation result. (Normally open
contact operation start instruction)
Page 160 LD, LDI,
AND, ANI, OR, ORI
LDI Outputs the on/off information of the specified device as the operation result. (Normally closed
contact operation start instruction)
AND Performs an AND operation between the on/off information of the specified device and the previous
operation result, and output the operation result. (Normally open contact series connection
instruction)
ANI Performs an AND operation between the on/off information of the specified device and the previous
operation result, and output the operation result. (Normally closed contact series connection
instruction)
OR Performs an OR operation between the on/off information of the specified device and the previous
operation result, and output the operation result. (Single normally open contact parallel connection
instruction)
ORI Performs an OR operation between the on/off information of the specified device and the previous
operation result, and output the operation result. (Single normally closed contact parallel
connection instruction)
Instruction symbol Processing details Reference
LDP Turns on only at the rising edge (off to on) of the specified bit device. (Rising edge pulse operation
start instruction)
Page 162 LDP, LDF,
ANDP, ANDF, ORP,
ORF
LDF Turns on only at the falling edge (on to off) of the specified bit device. (Falling edge pulse operation
start instruction)
ANDP Performs an AND operation with the previous operation result. (Rising edge pulse series
connection instruction)
ANDF Performs an AND operation with the previous operation result. (Falling edge pulse series
connection instruction)
ORP Performs an OR operation with the previous operation result. (Rising edge pulse parallel
connection instruction)
ORF Performs an OR operation with the previous operation result. (Falling edge pulse parallel
connection instruction)
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