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APPENDICES
A
Appendix 4 Special Register (SD) for MELSECNET/H (MELSECNET/10 Mode) Remote I/O Station
*1 This applies to Universal model QCPUs except for the Q02UCPU.
(3) Scan information
SD345,
SD346
Ethernet
information
Empty
(Information of
1st module)
Empty (For the QCPU, the IP address of the 1st Ethernet module is
stored in the buffer memory.)
S
(Initial)
New
Qn(H)
QnPH
QnPRH
QnU
Rem
SD347
Empty
(Information of
1st module)
Empty (For the QCPU, an error code of the 1st Ethernet module is
read with the ERRRD instruction.)
SD348
to
SD354
Information
from 2nd
module
Data configuration is the same as that of the 1st module.
SD355
to
SD361
Information
from 3rd
module
Qn(H)
QnPH
QnPRH
QnU
*1
Rem
SD362
to
SD368
Information
from 4th
module
No. Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corres-
ponding
CPU
SD550
Service
interval
measurement
module
Module No. Sets I/O number for module that measures service interval. U
New
QnA
Qn(H)
QnPH
QnPRH
Rem
SD551
Service
interval time
Module service
interval
(ms value)
This register stores the service interval of a module specified by
SD550 when SM551 is turned on. (The time is measured in
increments of 100µs.)
• SD551: Stores a ms value (storage range: 0 to 65535)
• SD552: Stores a µs value (storage range: 0 to 900)
S
(Request)
SD552
Module service
interval
(µs value)
No. Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corres-
ponding
CPU