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MELSEC-
A
6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL
Device name Device Application Details when ON
Program example that
uses device
A Ad Q/QnA
D75P2 Output
Y12A
A
xis 1 zero point return request OFF
request
Zero point return request OFF
requested
Y12B Axis 1 external start valid External start valid
Y178 Initial data process complete Initial data process complete
Y179 Initial data setting request Initial data setting requested
Y17E
Intelligent device station access
request
Intelligent device station access
requested
External
signal
Input
X20
Parameter change request
command
Parameter change request
commanding
X21
Zero point return request OFF
command
Commanding zero point return
request OFF
X22 External start valid setting command
Commanding external start valid
setting
X23 External start invalid command
Commanding external start invalid
command
X24 Machine zero point return command
Commanding machine zero point
return
X25
High-speed zero point return
command
Commanding high-speed zero point
return
X26
Data setting method zero point
return command
Data setting method zero point
return commanding
X27
Positioning start command (Data
No. 1)
Commanding positioning start
X28 Positioning start command Commanding positioning start
X29 M code OFF command Commanding M code OFF
X2A
JOG operation speed setting
command
Commanding JOG operation speed
setting
X2B Forward run JOG command
Commanding forward run JOG
operation
X2C Reverse run JOG command Commanding reverse run JOG
X2D
Manual pulse generator operation
enable command
Commanding manual pulse
generator operation enable
X2E
Manual pulse generator operation
disable command
Commanding manual pulse
generator operation disable
X2F Speed change command Commanding speed change
X30 Override command Commanding override
X31 Restart command Commanding restart
X32
Absolute position restoration
command
Absolute position restoration
commanding
X33 Error reset command Commanding error reset
X34 Machine feed value read command
Machine feed value read
commanding
X35 Speed limit value write command Speed limit value write commanding
X36 Stop command Commanding stop
X37
Speed/position changeover
operation command
Commanding speed/position
changeover operation
X38
Speed/position changeover enable
command
Commanding speed/position
changeover enable
X39
Speed/position changeover prohibit
command
Commanding speed/position
changeover prohibit
X3A
Advanced positioning control start
command
Commanding advanced positioning
control start
Output Y90 D75P2 fault LED D75P2 fault occurring