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MELSEC-Q
APPENDICES
Special Register List (Continued)
Number Name Meaning Explanation
Set by
(When set)
Corresponding
ACPU
D9
Corresponding
CPU
SD280 CC-Link error
Error detection
status
1
When Xn0 of a mounted CC-Link module turns on, the
corresponding bit is set to 1 (on).
2 When either Xn1 or XnF of a mounted CC-Link module turns off,
the corresponding bit is set to 1 (on).
3
When a mounted CC-Link module is not able to communicate
with the CPU module, the corresponding bit is set to 1 (on).
B0
1st module
2nd module
3rd module
B3
B4B7B8
B11B12
B15
Empty
4th module
Information
of
1
Information
of
2
Information
of
3
The above modules are numbered in order of the start I/O numbers.
(However, the one where no start I/O number is set in parameter is
not counted.)
S (Error) New
Qn(H)
QnPH
QnPRH
Rem
1
When Xn0 of a mounted CC-Link module turns on, the
corresponding bit is set to 1 (on).
2
When either Xn1 or XnF of a mounted CC-Link module turns off,
the corresponding bit is set to 1 (on).
3
When a mounted CC-Link module is not able to communicate
with the CPU module, the corresponding bit is set to 1 (on).
B15 B8B9 B0
8th
module
8th
module
1st
module
1st
module
...
toto
...
Information of
1
Information of
2
QnA
SD290
Device
assignment
(same as
parameter
contents)
Number of points
assigned for X
• Stores the number of points currently set for X devices
S (Initial) New
Rem
SD291
Number of points
assigned for Y
• Stores the number of points currently set for Y devices
SD292
Number of points
assigned for M
• Stores the number of points currently set for M devices
SD294
Number of points
assigned for B
• Stores the number of points currently set for B devices
SD296
Number of points
assigned for SB
• Stores the number of points currently set for SB devices
SD302
Number of points
assigned for D
• Stores the number of points currently set for D devices
SD303
Number of points
assigned for W
• Stores the number of points currently set for W devices
SD304
Number of points
assigned for SW
• Stores the number of points currently set for SW devices
SD315
Time
reserved for
communication
processing
Time reserved for
communication
processing
• This register specifies the amount of processing time for
communication with GX Developer or other devices.
• The greater the value specified is, the shorter the response time for
communication with another device (such as GX Developer or serial
communication module) is. However, scan time will increase by the
specified time.
• Setting range: 1 to 100ms
• A setting outside the above range is regarded as no setting.
U New
Q00J/
Q00/Q01
Qn(H)
QnPH
QnPRH
Rem