Instruction list
7-1
Chapter 7 Instruction List
1 Basic sequential instruction
Mnemonic Function Circuit Step
[LD]
Initial logical operation contact
type NO (normally open)
1
[LDI]
Initial logical operation contact type
NC (normally closed)
1
[AND]
Serial connection of NO (normally
open) contacts
1
[ANI]
Serial connection of NC (normally
closed) contacts
1
[OR]
Parallel connection of NO (normally
open) contacts
1
[ORI]
Parallel connection of (normally
closed) contacts
1
[LDP]
Initial logical operation -Rising edge
pulse
2
[LDF]
Initial logical operation Falling/
trailing edge pulse
2
[ANDP]
Serial connection of Rising edge
pulse
2
[ANDF]
Serial connection of Falling /trailing
edge pulse
2
[ORP]
Parallel connection of Rising edge
pulse
2
[ORF]
Parallel connection of Falling / trailing
edge pulse
2
[ANB]
Serial connection of multiple contact
circuits
1
[ORB]
Parallel connection of multiple contact
circuits
1
[MPS]
Stores the current result of the internal
PLC operations
1
[MRD]
Reads the current result of the internal
PLC operations
1
[MPP]
Pops (recalls and removes) the
currently stored result
1
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