Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 820

No. Name
SM796 Number of used blocks
information for the multiple
CPU dedicated instruction
(for CPU No.1)
SM797 Number of used blocks
information for the multiple
CPU dedicated instruction
(for CPU No.2)
SM798 Number of used blocks
information for the multiple
CPU dedicated instruction
(for CPU No.3)
SM799 Number of used blocks
information for the multiple
CPU dedicated instruction
(for CPU No.4)
SM816 Hold mode (S.IN
instruction)
SM817 Hold mode (S.OUT
instruction)
*1 The programmable controller CPU with firmware version "28" or later supports these special relay areas. However, there are no
restrictions on the version of the R00CPU, R01CPU, and R02CPU.
*2 There are restrictions on the firmware version of the supported CPU module and software version of the engineering tool. ( Page
1008 Added and Enhanced Functions)
APPX
818
Appendix 4 List of Special Relay Areas
Data stored Details
Off: The specified number • This relay switches to on when the
of blocks is reserved
On: The number of blocks
specified in SD796 is
not reserved
• This relay switches to off when there exist
Off: The specified number • This relay switches to on when the
of blocks is reserved
On: The number of blocks
specified in SD797 is
not reserved
• This relay switches to off when there exist
Off: The specified number • This relay switches to on when the
of blocks is reserved
On: The number of blocks
specified in SD798 is
not reserved
• This relay switches to off when there exist
Off: The specified number • This relay switches to on when the
of blocks is reserved
On: The number of blocks
specified in SD799 is
not reserved
• This relay switches to off when there exist
Off: Value not held Whether to hold the output value or not is
On: Value held specified when the input value is found to be
exceeding the valid range during the range
check processing of the S.IN instruction.
Off: Value not held This relay is used to specify whether or not
On: Value held to hold the output values of the S.OUT1,
S.OUT2, and S.DUTY instructions if a
sensor error occurs.
number of remaining blocks in the
dedicated instruction transfer area to be
used in the multiple CPU dedicated
instruction (target machine: CPU No.1)
drops below the number of blocks
specified in SD796. This relay is also on
when the instruction is being executed.
free blocks during the END processing.
number of remaining blocks in the
dedicated instruction transfer area to be
used in the multiple CPU dedicated
instruction (target machine: CPU No.2)
drops below the number of blocks
specified in SD797. This relay is also on
when the instruction is being executed.
free blocks during the END processing.
number of remaining blocks in the
dedicated instruction transfer area to be
used in the multiple CPU dedicated
instruction (target machine: CPU No.3)
drops below the number of blocks
specified in SD798. This relay is also on
when the instruction is being executed.
free blocks during the END processing.
number of remaining blocks in the
dedicated instruction transfer area to be
used in the multiple CPU dedicated
instruction (target machine: CPU No.4)
drops below the number of blocks
specified in SD799. This relay is also on
when the instruction is being executed.
free blocks during the END processing.
Set by (setting timing) CPU
S (Instruction execution/ Rn
During END) RnP
RnSF
S (Instruction execution/ Rn
During END) RnP
RnSF
S (Instruction execution/ Rn
During END) RnP
RnSF
S (Instruction execution/ Rn
During END) RnP
RnSF
U RnP
RnPSF
U RnP
RnPSF
*2
*2
*2
*2