HEIDENHAIN TNC 335 Technical Manual - Manual (Page 20)

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TNC 360/TNC 335 Update information No. 1 1-5
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PLC MODULE 9121
Stopping a positioning with an auxiliary axis
A positioning started beforehand with modules 9120 or 9123 can be canceled at any time with
module 9121.
Conditions:
The given axis must be activated via MP10 and configured in MP60 as an auxiliary axis.
If modules 9120, 9121 and 9122 are called several times for the same axis during a PLC-scan,
only the last instruction will be executed.
Potential errors:
A non-existent axis was transferred.
An axis was transferred that was not configured in MP10 and MP60 as an auxiliary axis.
The given axis is already stationary.
Call:
PS B/W/D/K <Axis> (0 to 3 for X/Y/Z/4)
CM9121
PL
B/W/D <Error code>
0: Positioning is canceled
1: A non-existent axis was transferred
2: Axis is not configured as an auxiliary axis
3: Axis was already stationary
Error status after call: M3171 = 0: Positioning was stopped
= 1: Faulty execution
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PLC MODULE 9122
Inquiring the status of an auxiliary axis
For a certain axis a bit-coded status word is transferred that contains information on the
momentary operating state of this axis.
Conditions:
Status changes causes by commands that the PLC sends to control the auxiliary axes
(modules 9120, 9121, 9123) are not recognized until the next PLC scan.
After switch-on, bit 1 (axis over reference point) is erased.
It is possible to position the axis without traversing the reference point first.