Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 856

No. Name
SD622 Data memory (drive
4) capacity
SD623
SD626 Extended SRAM
cassette capacity
identification
information
SD629 Program memory
write (transfer) status
SD630 Program memory
write count index
SD631
SD633 Data memory write
(transfer) status
SD634 Index for the number
of data memory write
SD635
operations
SD638 Index for the number
of system memory
write operations
SD639
SD640 Internal buffer empty
area usage status
SD642 Internal buffer
capacity
SD643
APPX
854
Appendix 5 List of Special Register Areas
Data stored Details
Data memory (drive The capacity of the data memory is stored in increments of 1K byte
4) capacity: the lower (the amount of free space for a formatted memory card is stored).
digits (unit: K bytes)
Data memory (drive The capacity of the data memory is stored in increments of 1K byte
4) capacity: the higher (the amount of free space for a formatted memory card is stored).
digits (unit: K bytes)
Capacity identification Capacity identification information of the Extended SRAM cassette
information of the is stored.
Extended SRAM Unmounted: 0, 1M: 1, 2M: 2, 4M: 3, 8M: 4, 16M: 5
cassette
Write (transfer) status This register displays write (transfer) status to the program memory
display in percentage (0 to 100%). The initial value is "0". Upon completion
(percent) of writing, this register is set to "100". It is set to "0" at the time
when the write command is issued.
Index of the number • This register indicates the index value for the number of write
of write operations up operations to the program memory up to now (stored as a 32-bit
to now BIN value). However, the number of write operations is not equal
to the index value.
• When the index value exceeds 100000, an error is generated
(the index value is continued to be counted even when it exceeds
100000). If the index value exceeds 100000, the CPU module
must be replaced.
Write (transfer) status This register displays write (transfer) status to the data memory in
display percentage. (0 to 100%). The initial value is "0". Upon completion of
(percent) writing, this register is set to "100". It is set to "0" at the time when
the write command is issued.
Index of the number • This register indicates the index value for the number of write
of write operations up operations to the data memory up to now (stored as a 32-bit BIN
to now value). However, the number of write operations is not equal to
the index value.
• When the index value exceeds 100000, an error is generated
(the index value is continued to be counted even when it exceeds
100000). If the index value exceeds 100000, the CPU module
must be replaced.
Index of the number • This register indicates the index value for the number of write
of write operations up operations to the system memory (Flash ROM)
to now (stored as a 32-bit BIN value). However, the number of write
operations is not equal to the index value.
• When the index value exceeds 100000, an error is generated
(the index value is continued to be counted even when it exceeds
100000). If the index value exceeds 100000, the CPU module
must be replaced.
Internal buffer empty This register stores the following in a bit pattern: usage status of the
area usage status internal buffer for functions where the internal buffer capacity is not
(usage status of the set in the internal buffer capacity setting of the CPU parameters.
internal buffer for (On indicates being used.)
functions where the b0: Used for realtime monitor
internal buffer b1 to b15: Not used
capacity is not set in
the internal buffer
capacity setting of the
CPU parameters)
Internal buffer The capacity of the internal buffer is stored in K bytes.
capacity
Low-order (in K
bytes)
Internal buffer The capacity of the internal buffer is stored in K bytes.
capacity
High-order (in K
bytes)
*2
*3
up to now.
Set by CPU
(setting
timing)
S (Initial) ALL
S (Initial) ALL
*5
S (Initial) ALL
S (Writing) ALL
S (Writing) ALL
ALL
S (Writing) ALL
S (Writing) ALL
ALL
S (Writing) RnPSF
RnSF
RnPSF
RnSF
S (Status Rn
change)
S (Initial) Rn
S (Initial) Rn