5. SEQUENCE INSTRUCTIONS
5 − 1
MELSEC-A
5. SEQUENCE INSTRUCTIONS
Sequence instructions are used for relay control circuits, etc. and classified as
follows.
Classification Description Refer to:
Contact instruction Operation start, series connection, parallel connection 5-2
Connection
instruction
Ladder block series connection, parallel connection,
operation result storage
5-5
Output instruction
Bit device output, differential output, set, reset, output
reverse
5-14
Shift instruction Bit device shift 5-28
Master control
instruction
Master control set, reset 5-30
Termination
instruction
Sequence program termination 5-34
Other instruction Sequence program stop, no operation 5-36