Mitsubishi MELSEC Q Series Programming Manual page 1272

Number Name
Axis 1 external I/O
SD1847
signal
SD1848
Axis 1 movement
amount after
near-point dog
SD1849
ON
Axis 1 Data No. of
SD1850 positioning being
executed
App-264
Meaning
• This register stores the on/off status of external I/O
signals.
• When an OPR method with the OPR retry function
(Near-point dog method, Count 1, Count 2) is
performed, a value indicating the status of the upper
limit signal or the lower limit signal is stored to the
external command signal.
b15 to
0
External I/O signals
*1 When an OPR method with the OPR retry function is
performed even once, a value indicating the status
of the upper limit signal or the lower limit signal will
be stored until when speed/position switching
control is started.
• This register stores "0" when machine OPR control is
started.
• After machine OPR control is started, this register
stores a travel distance from the point where the
Movement amount near-point watchdog signal turns on (The point is set
after near-point dog to "0".) to the point where machine OPR control is
ON completed.*1
• When an OPR method is set to Stopper 3, this
register always stores "0".
*1 Range: 0 to 2147483647 pulses
• This register stores the data No. of positioning being
executed.
(A storage value will be held until the next control
starts.)
Data No. of • "0" is stored when JOG operation or machine OPR
positioning being control is started.
executed • "1" is stored when high-speed OPR control is started.
• "1" is stored when positioning control is started by
the IPDSTRT1 or IPDSTRT2 instruction.
• If an error occurs at the start of positioning control,
the previous value will be held.
Explanation
*1
b6 b5 b4 b3 b2 b1 b0
0/1 0/1 0/1 0/1 0/1 0/1
Lower limit signal
0: OFF
1: ON
Upper limit signal
0: OFF
1: ON
Near-point watchdog
signal
0: OFF
1: ON
Drive unit ready signal
0: OFF
1: ON
External command
signal
0: OFF
1: ON
Zero signal
0: OFF
1: ON
Fixed to 0.
Corres-
ponding
Set by
ponding
ACPU
(When Set)
D9
S
(Every END New
processing)
Corres-
CPU
LCPU