Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

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APPX
Appendix 5 List of Special Register Areas
869
A
Memory dump function
The following is the special register area relating to the memory dump function.
*1 The CPU module where this function can be used supports this special register area.
Real-time monitor function
The following is the special register area relating to the real-time monitor function.
*1 The CPU module where this function can be used supports this special register area.
Debug function
The following is the special register area relating to the debug function.
*1 The CPU module where this function can be used supports this special register area.
No. Name Data stored Details Set by
(setting
timing) CPU
SD1472 Memory dump error
cause Memory dump error
cause The cause of the error occurred during the memory dump function
is stored.
0:
No error
Other than 0:For details on the values stored when an error occurs,
refer to the list of error codes. (

Page 703 List of error
codes)
S (upon error) Rn
*1
No. Name Data stored Details Set by
(setting
timing) CPU
SD1484 Real-time monitor
internal buffer free
space Free space size of the
internal buffer (K
bytes) The amount of free space of the internal buffer is stored in K bytes.
The smaller the value, the higher the generating ratio of processing
overflow. S (Status
change) Rn
*1
No. Name Data stored Details Set by
(setting
timing) CPU
SD1488 Debug function usage
status Debug function usage
status The usage status of the debug function is stored using the following
bit pattern.
b0: External input/output forced on/off
*1
Off: Not used
On: In use
b1: Program restoration information write status
*1
Off: All written
On: Not all written
When SM386 is on (without LED flashing), this bit does not turn
on.
b2: Registration status of the device test with execution
conditions
*1
Off: Not registered
On: Registered
b3 to b15: Empty (fixed to 0)
S (Status
change) Rn
RnP
RnSF
b1 b2 b0