Mitsubishi Q Series Programming Guide

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6 SFC PROGRAM EXECUTION
MELSEC-Q
(2) Block STOP timing and coil output status when STOP occurs
The STOP timing in response to a block STOP request, and the coil output status during the
STOP are as shown below.
Operation
Held step
Setting of Output
Mode at Block
Stop in PLC
Parameter
Operation
Output at
Block Stop
(SM325)
Status of STOP-
time Mode Bit
A
ctive step other than held
step
(including HOLD step
whose transition condition
is not satisfied)
Coil HOLD step
(SC)
Operation
HOLD step
(without
transition
check) (SE)
Operation
HOLD step
(with transition
check) (ST)
• OFF
• No setting
(immediate
stop)
•
Immediately after a
STOP request is made,
the coil output of the
operation output is
turned OFF and the
block is stopped.
•
The status remains
active.
• Turns OFF
(coil output
OFF)
•
Remains ON
(coil output
held)
•
OFF
(coil output
OFF)
•
ON
(STOP after
transition)
•
Normal operation is
performed until the
transition condition is
satisfied.
•
When the transition
condition is satisfied, the
end processing of the
corresponding step is
performed.
At the same time, the
transition destination
step becomes active and
the block stops
immediately.
• Immediately
after a STOP
request is
made, the coil
output of the
operation
output is
turned OFF
and the block
is stopped.
•
The status
becomes
inactive.
• Immediately after a STOP
request is made, the coil
output of the operation
output is turned OFF and
the block is stopped.
•
The status remains active.
• OFF
•
No setting
(immediate
stop)
•
Immediately after a
STOP request is made,
the block is stopped with
the coil output of the
operation output being
held.
•
The status remains
active.
• Remains ON
(coil output
held)
• ON
(coil output
held)
•
ON
(STOP after
transition)
• Normal operation is
performed until the
transition condition is
satisfied.
• When the transition
condition is satisfied, the
end processing of the
corresponding step is
performed.
At the same time, the
transition destination
step becomes active and
the block stops
immediately.
•
Immediately after a STOP request is made,
the block is stopped with the coil output of
the operation output being held.
•
The status remains active.
: The held step indicates the step whose attribute has been set to the HOLD step (SC, SE, ST)
and which is being held with the transition condition satisfied.

Mitsubishi Q Series Specifications

General

I/O Points	Up to 4096 points
Communication	Ethernet, RS-232, RS-485
I/O Modules	Digital, Analog, Specialized
Programming Language	Function Block Diagram, Structured Text
Power Supply	24V DC, 100-240V AC
Operating Temperature	0°C to 55°C
Shock Resistance	147 m/s2 acceleration, 3 times in each of X, Y, and Z directions
Program Capacity	Up to 252K steps