Mitsubishi Electric Q173DSCPU - Page 185

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3 MOTION DEDICATED PLC INSTRUCTION
• Special register of PLC CPU
Device No. Name Meaning Explanation Set by
SD796
Maximum number of blocks used
for the Multiple CPU high-speed
transmission dedicated instruction
setting (For CPU No.1)
Maximum number of
blocks range for
dedicated instructions
Range: 1 to 7 (Default: 2)
(Note): When setting
other than 1 to 7,
the register
operates as 7.
Specifies the maximum number of blocks
used for the Multiple CPU high-speed
transmission dedicated instruction.
When the dedicated instruction of Multiple
CPU transmission is executed to the
target CPU, and the number of empty
blocks of the dedicated instruction
transmission area is less than the setting
value of this register, "SM796 to SM799"
is turned ON, which is used as the
interlock signal for consecutive execution
of the dedicated instruction of Multiple
CPU transmission.
User
(At 1 scan after
RUN)
SD797
Maximum number of blocks used
for the Multiple CPU high-speed
transmission dedicated instruction
setting (For CPU No.2)
SD798
Maximum number of blocks used
for the Multiple CPU high-speed
transmission dedicated instruction
setting (For CPU No.3)
SD799
Maximum number of blocks used
for the Multiple CPU high-speed
transmission dedicated instruction
setting (For CPU No.4)
[Operation timing]
Operation which executes each Motion dedicated instruction and turns on
the Multiple CPU high-speed transmission block information.
Sequence program END
0.88ms
Transfer Transfer
ON
CPU dedicated transmission
(0.88ms cycle)
Motion dedicated
PLC instruction
Instruction execution
Number of
empty blocks
Check at END
processing
Dedicated instruction
transmission area usage
Block information using
Multiple CPU high-speed
t
ransmission dedicated
instruction (For CPU No.2)
(SM797)
Total dedicated
instruction transmission
area
Permissible number
of executions
Permissible number of executions or
more by the new instruction without an
interlock condition
Maximum number of blocks
used for the Multiple CPU
high-speed transmission
dedicated instruction setting
(For CPU No.2) (SD797)