Mitsubishi Electric melsec q00ujcpu User Manual page 481

(9) A to Q conversion correspondences
Special relays SM1000 to SM1255 are the relays which correspond to ACPU special relays
M9000 to M9255 after A to Q conversion.
(However, the Basic model QCPU and Redundant CPU do not support the A to Q
conversion.)
These special relays are all set by the system, and cannot be set by the user program.
To turn them ON/OFF by the user program, change the special relays in the program into
those of QCPU.
However, some of SM1084 and SM1200 to SM1255 (corresponding to M9084 and M9200 to
M9255 before conversion) can be turned ON/OFF by the user program, if they could be
turned ON/OFF by the user program before conversion.For details on the ACPU special
relays, see the user's manuals for the individual CPUs, and MELSECNET or MELSECNET/
B Data Link System Reference Manuals
Check "Use special relay/special register from SM/SD1000" for "A-PLC" on the PLC system tab of PLC parameter in GX
Developer when the converted special relays are used with the High Performance model QCPU, Process CPU, and
Universal model QCPU.
When not using the converted special relays, uncheck "Use special relay/special register from SM/SD1000" to save the time
taken for processing special relays.
Remark
The following are additional explanations about the Special Relay for Modification column.
When a special relay for modification is provided, the device number should be changed to the provided QCPU special
relay.
When
When
ACPU Special Special
Special Relay after Relay for
Relay Conversion Modification
M9000 SM1000
M9002 SM1002
*1: The relevant modules are as follows:
• The Universal model QCPU whose serial number (first five digits) is "10102" or later.
• Q00UJCPU, Q00UCPU, Q01UCPU
12 - 15
is provided, the converted special relay can be used for the device number.
is provided, the device number does not work with QCPU.
Table12.10 Special relay
Name
OFF : Normal
–
Fuse blown ON : Module with blown
I/O module verify OFF : Normal
–
error ON : Error
Meaning
• Turned on when there is one or more output modules of
which fuse has been blown.
• Remains ON if the condition is restored to normal
thereafter.
fuse
• Output modules of remote I/O stations are also checked
fore fuse condition.
• Turned on if the status of I/O module is different form
entered status when power is turned on.
• Remains ON if the condition is restored to normal
thereafter.
• I/O module verification is done also to remote I/O station
modules.
• Reset is enabled only when special registers SD1116 to
SD1123 are reset.
Corresponding
Details
CPU
Qn(H)
QnPH
*1
QnU