Mitsubishi MELSEC Q Series - Page 1163

App-155
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A
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Appendix3 SPECIAL RELAY LIST
SM310 RS-232 adapter
OFF : Not connected
ON :Connected
This relay stores information on whether an
RS-232 adapter is connected or not.
Connection of an RS-232 adapter is checked
at the time of initialization, and if it is
connected, this relay turns on. The on/off
status set during initialization is held until the
power is turned off and on again or the
system is reset.
S (Initial)
New
LCPU
SM315
Communication
reserved time
delay enable/
disable flag
OFF : Without delay
ON : With delay
• This flag is enabled when the time reserved
for communication processing is set in
SD315.
• Turns ON to delay the END processing by
the time set in SD315 in order to perform
communication processing.
(The scan time increases by the period set
in SD315.)
• Turns OFF to perform the END processing
without a delay of the time set in SD315
when there is no communication
processing. (Defaults to OFF)
U Q00J/Q00/Q01
SM319
Automatic CC-
Link start
OFF : Not activated
ON : Activated
• This relay indicates whether the CC-Link
module is started and all the data are
refreshed by the automatic CC-Link start
function.
• This relay is on when all the data are
refreshed by the automatic CC-Link start
function.
• Then the automatic CC-Link start function
is not activated, or when the refresh device
range is insufficient, this relay is turned off.
(If the refresh device range set for the
automatic CC-Link start function is
insufficient, all of the refresh is stopped.)
S (Initial
processing and
status change)
LCPU
SM320
Presence/
absence of SFC
program
OFF : SFC program
absent
ON : SFC program
present
• This relay is on if an SFC program is
registered.
• This relay turns off if no SFC program is
registered.
S (Initial) M9100
Q00J/Q00/Q01
*1
Qn(H)
QnPH
QnPRH
QnU
LCPU
SM321
Start/stop SFC
program
OFF : SFC program not
executed (stop)
ON : SFC program
executed (start)
• The same value as in SM320 is set as the
initial value.
(This relay turns on when an SFC program
is registered.)
• Turning off this relay stops SFC program
execution.
• Turning on this relay restarts SFC program
execution.
S (Initial)/U
M9101
format
change
SM322
SFC program
start status
OFF : Initial start
ON : Resume start
In the SFC setting of the PLC Parameter
dialog box, Initial start is set for the SFC
program start mode.
• At initial start: OFF
• At continued start: ON
M9102
format
change
SM323
Presence/
absence of
continuous
transition for
entire block
OFF : Continuous
transition not
effective
ON : Continuous
transition effective
Set the presence/absence of continuous
transition for the block where "Continuous
transition bit" of the SFC data device has not
been set.
U M9103
SM324
Continuous
transition
prevention flag
OFF : When transition is
executed
ON : When no
transition
• This relay is off while the module is in the
continuous transition mode or during
continuous transition, and is on when
continuous transition is not executed.
• This relay is always on while the CPU
module is operating not in the continuous
transition mode.
S (Instruction
execution)
M9104
S (Status
change)
New
Q00J/Q00/Q01
*1
Qn(H)
QnPH
QnPRH
QnU
Number Name
Meaning
Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU