HEIDENHAIN TNC 335 Technical Manual - Manual (Page 494)

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TNC 360 4 PLC Modules 7-115
4.9.7 Module 9121 Stop an auxiliary axis
A positioning movement that has been started with Module 9120 or Module 9123 can be canceled
at any point with Module 9121.
Constraints:
− The entered axis must have been activated through MP10 and declared as auxiliary axis through
MP60.
− If the modules 9120, 9121 and 9122 are called repeatedly for the same axis during a PLC scan,
the last command is executed.
Possible errors:
− The transferred axis does not exist.
− The transferred axis was not declared through MP10 and MP60 to be an auxiliary axis.
− The entered axis is already stationary.
Call:
PS B/W/D/K (0 to 3 for X/Y/Z/4)
CM9121
PL
B/W/D
0: Positioning movement is canceled
1: Transferred axis does not exist
2: Axis is not configured as an auxiliary axis
3: The entered axis was already stationary
Error status after call: M3171 = 0: Positioning movement is stopped
= 1: Faulty execution
4.9.8 Module 9122 Poll the status of an auxiliary axis
For a certain axis a bit-encoded status word is transferred that provides information on the
momentary condition of this axis.
Constraints:
− Status changed resulting from commands sent by the PLC 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 even without first crossing over the reference mark.