
B–63833EN–1/02
4. REFERENCE POSITION ESTABLISHMENT
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[Classification] Input signal
[Function] This signal selects manual reference position return. Manual reference
position return is a kind of jog feed. Therefor, to select manual reference
position return, it is required that the jog mode be selected and that the
manual reference position return selection signal be set to “1”.
[Operation] When the manual reference position return selection signal is set to “1”,
the control unit performs as described below.
D If jog feed mode is not selected, the control unit ignores the manual
reference position return selection signal.
D If jog mode is selected, manual reference position return is enabled.
In this case, the manual reference position return selection check
signal MREF turns to “1”.
NOTE
If the ZRN status changes state during jog feed, the
feedrate is decelerated to 0. Then, to restart reference
position return or jog feed, turn feed axis and direction
selection signal to “0” then set it to “1”.
[Classification] Output signal
[Function] This signal indicates that manual reference position return has been
selected.
[Output condition] This signal turns to “1” when:
⋅ Manual reference position return has been selected.
The signal turns to “0” when:
⋅ The selection of manual reference position return has terminated.
Signal
Manual reference
position return selection
signal ZRN <G043#7>
Manual reference
position return selection
check signal MREF
<F004#5>