Instruction Related - Mitsubishi Electric MELSEC iQ-R Series User Manual

Instruction related

The following is the list of special register areas relating to the instruction-related items.
No. Name Data stored
SD757 Current interrupt Current interrupt
priority priority
SD758 Interrupt disabling for Interrupt disabling for
each priority setting each priority setting
value value
SD771 Specification of the Specification of the
number of write number of write
instruction instruction executions
executions to data to data memory
memory
SD775 Selection of refresh Selection of refresh
processing during processing during the
the COM instruction COM instruction
execution execution
SD792 PID limit setting (for 0: Limit restriction
and complete derivative)
SD793 1: No limit restriction
SD794 PID limit setting (for 0: Limit restriction
and incomplete
SD795 derivative) 1: No limit restriction
Details
The priority for the interrupt of the interrupt program currently executed is
stored.
1 to 8:Priority for the interrupt pointer of the interrupt program currently
being executed
0: No interrupt operation (default)
The interrupt priority of the interrupt program that the interrupt is disabled by
using the DI instructions (Disabling interrupt programs/Disabling interrupt
programs with specified priority or lower) and the EI instruction (Enabling
interrupt programs) is stored in this register.
1: Interrupt programs with priority 1 or lower (all priority levels) disabled
(default)
2: Interrupt programs with priority 2 or lower disabled
3: Interrupt programs with priority 3 or lower disabled
4: Interrupt programs with priority 4 or lower disabled
5: Interrupt programs with priority 5 or lower disabled
6: Interrupt programs with priority 6 or lower disabled
7: Interrupt programs with priority 7 or lower disabled
8: Interrupt programs with priority 8 or lower disabled
0: No interrupt program disabled (interrupt programs with any priority level
enabled)
In this register, the maximum number of the data memory writing instruction
(SP.DEVST) executions per day is specified.
When the number of data memory writing instruction executions exceeds
the value specified in this register, an error is generated.
Setting range is from 1 to 32767. If a value is set outside the range, an error
is generated during the data memory writing instruction execution.
In this register, whether or not each processing is executed during the COM
instruction execution is selected (Default: 0).
The specification on the SD775 is effective when SM775 is turned on.
b15 ∙∙∙ b13
 Refresh processing (0: Not executed, 1: Executed)
b0: I/O refresh, I/O fetch from a group out of the multiple CPU system
b1: Link refresh of the CC-Link module
b2: Link refresh of the CC-Link IE Controller Network module and
MELSECNET/H network module
b3: Intelligent function module refresh
b4: Refresh using the CPU buffer memory of the multiple CPU system
(END)
b6: Link refresh of the CC-Link IE Field Network module
 Device/label access service processing execution (0: Executed, 1: Not
executed)
b15:Device/label access service processing (communications with the
engineering tool, GOT, or other external devices)
The limit restriction for each PID loop is specified as follows: (for the
applied PIDCONT instruction)
b15
SD792 16
SD793 32
1 to 32: Loop 1 to 32
The limit restriction for each PID loop is specified as follows: (for the
applied S.PIDCONT instruction)
b15
16
SD794
SD795 32
1 to 32: Loop 1 to 32
∙∙∙ b6 ∙∙∙ b4 b3 b2 b1
b1 b0
to 2 1
to 18 17
b1 b0
to 2 1
18 17
to
Appendix 5 List of Special Register Areas
Set by (setting
timing)
S (Status change)
S (Status change)
U
U
b0
U
U
APPX
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A