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MELSEC-Q
11 TROUBLESHOOTING
Special Register List (Continued)
Number Name Meaning Explanation
Set by
(When set)
Corresponding
ACPU
D9
Corresponding
CPU
SD302
Number of points
allocated for D
• Stores the number of points currently set for D devices
SD303
Number of points
allocated for W
• Stores the number of points currently set for W devices
SD304
Device
allocation
(Same as
parameter
contents)
Number of points
allocated for SW
• Stores the number of points currently set for SW devices
S (Initial) New
+Rem
SD315
Time
reserved for
communicat
ion
processing
Time reserved for
communication
processing
Reserves the designated time for communication processing with
GX Developer or other units.
The greater the value is designated, the shorter the response time
for communication with other devices (GX Developer, serial
communication units) becomes.
Setting range: 1 to 100 ms
If the designated value is out of the range above, it is assumed to
no setting.
U
(END
processing)
New QCPU
SD340
No. of modules
installed
• Indicates the number of modules installed on Ethernet.
SD341 I/O No. • Ethernet I/O No. of the 1st module installed.
SD342
Network
No.
• Ethernet network No. of the 1st module installed.
SD343 Group No. • Ethernet group No. of the 1st module installed.
SD344
Station
No.
• Ethernet station No. of the 1st module installed.
SD345 to
SD346
Vacant
• Vacant
(With High Performance model QCPU, the Ethernet IP address
of the 1st module is stored in buffer memory.)
SD347
Informa-
tion of 1st
module
Vacant
• Vacant
(With High Performance model QCPU, the Ethernet error code of
the 1st module is read with the ERRORRD instruction.)
S (Initial) New
SD348 to
SD354
Information from 2nd
module
• Configuration is identical to that for the first module.
SD355 to
SD361
Information from 3rd
module
• Configuration is identical to that for the first module.
SD362 to
SD368
Ethernet
information
Information from
4th module
• Configuration is identical to that for the first module.
S (Initial) New
QCPU
Remote
SD340
No. of modules
installed
• Indicates the number of modules installed on Ethernet.
SD341 I/O No. • Ethernet I/O No. of the 1st module installed.
SD342
Network
No.
• Ethernet network No. of the 1st module installed.
SD343 Group No. • Ethernet group No. of the 1st module installed.
SD344
Station
No.
• Ethernet station No. of the 1st module installed.
SD345 to
SD346
IP address • Ethernet IP address of the 1st module installed.
SD347
Informa-
tion of 1st
module
Error code • Ethernet error code of the 1st module installed.
SD348 to
SD354
Information from 2nd
module
• Configuration is identical to that for the first module.
SD355 to
SD361
Information from 3rd
module
• Configuration is identical to that for the first module.
S (Initial) New
SD362 to
SD368
Ethernet
information
Information from 4th
module
• Configuration is identical to that for the first module. S (Initial) New
SD380
Ethernet
instruction
reception
status
Instruction reception
status of 1st module
B0
Instruction reception status of channel 1
Instruction reception status of channel 2
B1B2B3B4B5B6B7B8B15
Instruction reception status of channel 3
Instruction reception status of channel 4
Instruction reception status of channel 5
Instruction reception status of channel 6
Instruction reception status of channel 7
Instruction reception status of channel 8
ON: Received (Channel is used.)
OFF: Not received (Channel is not used.)
00to
Not used
S (Initial) New
QnA