Mitsubishi Electric MELSEC iQ-R C R12CCPU-V User Manual page 221

System information
The special registers for system information are as follows.
No. Name Content
SD200 Switch status CPU switch status
(RESET/STOP/
RUN switch)
SD201 LED status Status of CPU-LED
SD203 CPU operating CPU operating
status status
SD228 Multiple CPU Number of CPU
system information modules
SD229 CPU module
number in multiple
CPU system
SD230 CPU No.1 operating
status
SD231 CPU No.2 operating
status
SD232 CPU No.3 operating
status
SD233 CPU No.4 operating
status
SD241 Number of 0: Main base unit
extension base unit only
1 to 7: Number of
extension base
units
Details
The switch status of the CPU module is stored as follows:
0: RUN, 1: STOP
This device stores the information that indicates LED status of the CPU
module in the following bit patterns.
0: OFF, 1: ON, 2: Flashing (high speed/low speed)
b15 b12 b11 b8
(8) (7) (6) (5)
(1) READY
(2) ERROR
(3) BUS RUN
(4) USER
(5) USB RDY
(6) CARD RDY
(7) Reserved
(8) RS SD/RD
The operating status of the CPU module is stored as follows:
0: RUN, 1: Reserved, 2: STOP, 3: PAUSE
The number of CPU modules in the multiple CPU system is stored (one to
four, including empty CPU).
The host station CPU number is stored when a multiple CPU system is
configured.
The operation information for each CPU number is stored. (Information
for a number of multiple CPUs which is indicated in SD228 is stored.)
b15 b14 ~ b8 b7 b6
(4) (3)
(1) The operating status is stored in b0 to b3.
• 0: RUN
• 2: STOP
• 3: PAUSE
• 4: Initial
• FH: Reset
(2) The classification is stored in b4 and b5. However, minor or moderate
errors will be those set in the CPU parameter RAS settings, system
parameter I/O assignment settings, and multiple CPU settings.
• 0: Normal
• 1: Minor error
• 2: Moderate error
• 3: Major error
(3) The stop error flag is stored in b7.
• 0: No stop error
• 1: Stop error
(4) The mounting status of the CPU module is stored in b15.
• 0: Not mounted
• 1: Mounted
The maximum number of the implemented extension base units is stored.
b7 b4 b3 b0
(4) (3) (2) (1)
b5 b4 b3 ~ b0
(2) (1)
Appendix 6 Special Register List
Set by (when to set)
S (when the switch status
is changed)
S (status change)
S (system)
S (initial)
S (initial)
S (at error occurrence)
A
S (initial)
APPX
219