Mitsubishi Electric Q26UD(E)HCPU User Manual page 481

ACPU Special Special
Special Relay after Relay after
Relay Conversion Modification
M9011 SM1011 SM56
M9012 SM1012 SM700

M9016 SM1016
M9017 SM1017 

M9020 SM1020
M9021 SM1021 

M9022 SM1022
M9023 SM1023 
M9024 SM1024 

M9025 SM1025

M9026 SM1026

M9028 SM1028
M9029 SM1029 
Name Meaning
Operation error OFF: No error
flag ON: Error
OFF: Carry OFF
Carry flag
ON: Carry ON
Data memory OFF: Ignored
clear flag ON: Output cleared
Data memory OFF: Ignored
clear flag ON: Output cleared
User timing
n2 scan
clock No.0
User timing
n1 scan
clock No.1
User timing
clock No.2
User timing
clock No.3
User timing
clock No.4
Clock data set OFF: Ignored
request ON: Set request
OFF: No error
Clock data error
ON: Error
Clock data read OFF: Ignored
request ON: Read request
Batch
OFF: Batch processing
processing of
not conducted
data
ON: Batch processing
communications
conducted
requests
Details
• This relay turns on when an operation
error occurs during execution of an
application instruction.
• This relay remains on even after the
system returns to normal.
Carry flag used in application instruction
When SM1016 turns on and remote RUN
mode is activated from a computer, all the
data memory including the latch range
(except for the special relay and special
register) is cleared.
When SM1017 turns on and remote RUN
mode is activated from a computer, all the
data memory that is not latched (except for
the special relay and special register) is
cleared.
• This relay repeatedly turns on and off at
n2 scan
the specified scan intervals.
• When the CPU module is powered on or
reset, this relay is set to on from off to
start the clock. Set the intervals of on/off
by DUTY instruction.
DUTY n1
n1: On scan interval
n2: Off scan interval
• When SM1020 to SM1024 are specified
for the DUTY instruction in programs, if
the CPU type is changed from the High
Performance model QCPU or Process
CPU to the Universal model QCPU or
LCPU, they are replaced with SM420 to
SM424. (For the Universal model QCPU
and LCPU, SM1020 to SM1024 cannot
be specified.)
Clock data stored in SD1025 to SD1028
are written to the CPU module after the
END instruction execution in the scan
where SM1025 is turned on.
This relay turns on if an error occurs in the
clock data (SD1025 to SD1028), and is off
while there is no error.
This relay is turned on to read clock data
and store them as BCD values into
SD1025 to SD1028.
• When this relay is turned on in the
program, all the data communication
requests accepted during one scan are
processed in the END processing of that
scan.
• The batch processing of data
communication requests can be turned
on or off during running.
• The default is OFF (processed one at a
time for each END processing in the
order in which data communication
requests are accepted).
APPENDICES
Corresponding
CPU
Qn(H)
QnPH
*1
QnU
Qn(H)
QnPH
Qn(H)
QnPH
Qn(H)
QnPH
n2 SM1020
Qn(H)
QnPH
*1
QnU
LCPU
Qn(H)
QnPH
*1
QnU
LCPU
Qn(H)
QnPH
*1
QnU
LCPU
Qn(H)
QnPH
*1
QnU
LCPU
Qn(H)
QnPH
479
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