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Appendix 3 SPECIAL RELAY LIST
*3: The A8UPU/A8PUJ is not available for the QCPU/QnACPU.
TableApp.3.11 Special relay
ACPU
Special
Relay
Special
Relay after
Conversion
Special
Relay for
Modification
Name Meaning Details
Corresponding
CPU
M9056 SM1056
Main side P, I set
request
OFF : Other than when P, I
set being requested
ON : P, I set being
requested
• Provides P, I set request after transfer of the other
program (for example subprogram when main program is
being run) is complete during run. Automatically switched
off when P, I setting is complete.
Qn(H)
QnPH
M9057 SM1057
Sub side P, I set
request
OFF : Other than when P, I
set being requested
ON : P, I set being
requested
M9058 SM1058
Main side P, I set
completion
Momentarily ON at P, I set
completion
• Turned ON once when the P, I set has been completed,
and then turned OFF again.
M9059 SM1059
Sub program P, I
set completion
Momentarily ON at P, I set
completion
M9060 SM1060
Sub program 2 P, I
set request
OFF : Other than when P, I
set being requested
ON : P, I set being
requested
• Provides P, I set request after transfer of the other
program (for example subprogram when main program is
being run) is complete during run. Automatically switched
off when P, I setting is complete.
M9061 SM1061
Sub program 3 P, I
set request
OFF : Other than when P, I
set being requested
ON : P, I set being
requested
M9070 SM1070
A8UPU/
A8PUJrequired
search time
*3
OFF : Read time not
shortened
ON : Read time shortened
• Turned ON to shorten the search time in the A8UPU/
A8PUJ.
(In this case, the scan time is extended by 10 %.)
M9084 SM1084 Error check
OFF : Error check executed
ON : No error check
It is set whether the error checks below are performed or not
when the END instruction is processed (to set the END
instruction processing time).
• Check for fuse blown.
• Check of battery
• Collation check of I/O module
M9091 SM1091
Operation error
details flag
OFF : No error
ON : Error
• Turns ON when the detail factor of the operation error is
stored into SD1091.
• Remains ON if the condition is restored to normal
thereafter.
M9100 SM1100 SM320
Presence/absence
of SFC program
OFF : SFC programs not
used
ON : SFC programs used
• Turned on if the SFC program is registered.
• Turned off if the SFC program is not registered.
M9101 SM1101 SM321
Start/stop SFC
program
OFF : SFC programs stop
ON : SFC programs start
• The value in SM1100 is set as the initial value.
(The relay automatically turns ON when the SFC program
is present.)
• When this relay turns from ON to OFF, execution of the
SFC program stops.
• When this relay turns from OFF to ON, execution of the
SFC program resumes.
M9102 SM1102 SM322
SFC program start
status
OFF : Initial start
ON : Resume start
• The SFC program start mode in the SFC setting of the
PLC parameter dialog box is set as the initial value.
At initial start: OFF
At continue start: ON