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3 MOTION DEDICATED PLC INSTRUCTION
The start accept flag is set after instruction acceptance of by the Motion
CPU as follows.
ON
0.88ms
DP.SVST instruction
1 scan
Servo program
DP.SVST execution
Complete device (D1+0)
Sequence program
Status display device (D1+1)
at the completion
CPU dedicated transmission
(0.88ms cycle)
END END
ON
Servo program executed processing
ON : Abnormal completion only
TransferTransfer
Response
data set
Request data set
ON
Start accept flag
(System area)
The start accept flag does not turn ON until the instruction accepting of
instruction is completed by the Motion CPU after instruction execution by
the PLC CPU.
Therefore, use a user device created interlock as required to prevent the
execution of the next Motion dedicated PLC instruction and avoid a same
axis double start error.
[Program example]
DP.SVST
Instruction
execution
command
H3E1 D100
SET M10
X0
K11 M100
Complete
device
M100
Start accept
flag of CPU
No.2(Axis 1)
U3E1
\G516.0
"J1"
M10
Interlock
Interlock
RST M10
Interlock
Program which executes continuous start of servo program No.11 for Axis 1 of the Motion
CPU (CPU No.2), while X0 is ON.
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