Mitsubishi 00JCPU User Manual

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CHAPTER9 DEVICES
9
9.3 Internal System Devices 9.3.3 Special register (SD)
9.3.3 Special register (SD)
(1) Definition
The special register (SD) is an internal relay of which details are specified inside the programmable controller,
and the CPU module status data (such as error diagnostics or system information) are stored in this special
register.
(2) Special register classifications
Table9.8 shows special register classifications.
:Usable special register exists, :Usable special register does not exist
*1: Valid only when "Use special relay/special register from SM/SD1000" is selected in the PLC system tab of the PLC parameter dialog box.
Remark
For details of the special register, refer to the following.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
Table9.8 Special register classification list
Classification Special register
CPU module
Basic model
QCPU
High Performance
model QCPU
Process CPU
Redundant
CPU
Diagnostics information
SD0 to SD99
SD100 to SD199
Serial communication function SD100 to SD129
Fuse blown module
SD130 to SD149
SD1300 to SD1399
Check of I/O modules
SD150 to SD199
SD1400 to SD1499
System information SD200 to SD399
System clocks and counters SD400 to SD499
Scan information SD500 to SD599
Drive information SD600 to SD699
Instruction related SD700 to SD799
Debugging SD800 to SD899
Latch area SD900 to SD929
Redundant CPU information
(power backup information)
SD952
A QnA conversion compatibility
SD1000 to SD1255
*1
Process control instruction SD1500 to SD1509
Redundant system (host system
CPU information)
SD1510 to SD1599
Redundant system (other system
CPU information)
SD1600 to SD1699
Redundant system (tracking
information)
SD1700 to SD1779
Redundant power supply module
information
SD1780 to SD1799

Mitsubishi 00JCPU Specifications

General

Brand	Mitsubishi
Model	00JCPU
Category	Controller
Language	English