Memory Dump Function - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

Memory dump function

The following is the special register area relating to the memory dump function.
No. Name
SD1472 Memory dump error
cause
*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.
No. Name
SD1484 Real-time monitor
internal buffer free
space
*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.
No. Name
SD1488 Debug function usage
status
*1 The CPU module where this function can be used supports this special register area.
Data stored Details
Memory dump error The cause of the error occurred during the memory dump function
cause 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)
Data stored Details
Free space size of the The amount of free space of the internal buffer is stored in K bytes.
internal buffer (K The smaller the value, the higher the generating ratio of processing
bytes) overflow.
Data stored Details
Debug function usage The usage status of the debug function is stored using the following
status bit pattern.
b0: External input/output forced on/off
Off: Not used
On: In use
b1: Program restoration information write status
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
*1
conditions
Off: Not registered
On: Registered
b3 to b15: Empty (fixed to 0)
b2 b1 b0
*1
*1
Appendix 5 List of Special Register Areas
Set by CPU
(setting
timing)
*1
S (upon error) Rn
Set by CPU
(setting
timing)
*1
S (Status Rn
change)
Set by CPU
(setting
A
timing)
S (Status Rn
change) RnP
RnSF
APPX
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