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Appendix BProgramming Instructions and Execution Times
175
Ladder Diagram Instructions
Name
Mnemonic
Symbol
Function
Operands
LOAD
LD
LD B
Used to start instruction block with status
of designated bit.
B:
IR
SR
HR
TC
TR
LOAD NOT
LD NOT
LD NOT B
Used to start instruction block with in-
verse of designated bit.
B:
IR
SR
HR
TC
TR
AND
AND
AND B
Logically ANDs status of designated bit
with execution condition.
B:
IR
SR
HR
TC
TR
AND NOT
AND NOT
AND NOT B
Logically ANDs inverse of designated bit
with execution condition.
B:
IR
SR
HR
TC
TR
OR
OR
OR B
Logically ORs status of designated bit
with execution condition.
B:
IR
SR
HR
TC
TR
OR NOT
OR NOT
OR NOT B
Logically ORs inverse of designated bit
with execution condition.
B:
IR
SR
HR
TC
TR
AND LOAD
AND LD
AND LD -
Logically ANDs results of preceding
blocks.
None
OR LOAD
OR LD
OR LD -
Logically ORs results of preceding
blocks.
None
Refer to table at beginning of Appendix B for page references.