Mitsubishi Electric R16MTCPU Programming Manual page 75

Processing details
■Controls
• Request a machine program operation start to the Motion CPU from the data stored in the machine positioning data area of
the device of the self CPU specified with (S2) and after.
• It is necessary to take an inter-lock by the start accept flag of CPU buffer memory and user device so that multiple
instructions may not be executed toward the same axis of the same Motion CPU No.
Refer to the start accept flag (system area) for details of the start accept flag. (Page 82 Start accept flag
(System area))
■Operation
Outline operation between CPUs at the MP.MCNST and DP.MCNST instruction execution is shown below.
• MP.MCNST instruction
Sequence program
MP.MCNST instruction
Axis start accept flag
(System area)
CPU dedicated transmission
(Non-fixed cycle)
Machine operation
program
Operation cycle
Complete device (D1+0)
Status display device (D1+1)
at the completion
*1 Set in [Motion CPU Common parameter]  [Basic Setting]
• DP.MCNST instruction
Sequence program
DP.MCNST instruction
Axis start accept flag
(CPU buffer memory)
CPU dedicated transmission
(Fixed cycle)
Communication
Machine operation
program
Operation
Complete device (D1+0)
Status display device (D1+1)
at the completion
*1 Set in [System Parameter]  [Multiple CPU settings] in GX Works3
*2 Set in [Motion CPU Common parameter]  [Basic Setting]
MP.MCNST
ON
execution
Request
ON
data set
Transfer
Response
data set
*1
DP.MCNST execution
ON
Request
ON
data set
Transfer Transfer
Response
*1
cycle
data set
*2
cycle
END END
Machine operation program
executed processing
ON
ON: Abnormal completion only
1 scan
END END
Machine operation program
executed processing
ON
ON: Abnormal completion only
1 scan
2 MOTION DEDICATED PLC INSTRUCTION
2.2 Motion Dedicated PLC Instruction
2
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