Mitsubishi Q2ACPU User Manual

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12. OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU
(5) Operation processing of QnACPU when RUN/STOP key switch is operated
RUN/STOP state
QnACPU Operation Processing
Operation processing of
sequence program
External output
Data memory
Remark
M, L, S, T, C, D Y
RUN STOP
Executes up to the END
instruction, then stops.
OS saves the output
status, and sets all the
output points to OFF.
Retains the condition
immediately before
entering the STOP
status.
OS saves the output
status, and sets all the
output points to OFF.
STOP RUN
Starts from step 0.
Depends on the
output mode set by
the parameter for
STOP RUN.
Starts operations from
the condition
immediately before
entering the STOP
status.
Depends on the
output mode set by
the parameter for
STOP RUN.
POINT
The QnACPU executes the following processing in any of RUN state, STOP state,
or PAUSE status.
• Refresh processing of I/O modules
• Data communication with peripheral devices, computer link modules, and/or
serial communication modules.
• Link refresh processing.
Thus, even in the STOP state or PAUSE state, I/O monitoring and test operations
using a peripheral device, reading/writing from computer link modules or serial
communication modules, and communication with other stations via MELSECNET
can be performed.

Mitsubishi Q2ACPU Specifications

General

Brand	Mitsubishi
Model	Q2ACPU
Category	Controller
Language	English