Exclusively Plc-Controlled Axis And Permanently-Assigned Plc Axis - Siemens SINUMERIK 840D sl Function Manual

K5: Mode groups, channels, axis interchange
6.4 Axis/spindle replacement
If the spindle (axis B) is traversed immediately after block N023 as a PLC axis to 180° and
back to 1°, and then again to the neutral axis, block N040 does not trigger a preprocessing
stop nor a reorganization.
Special case: Axis replacement with preprocessing stop
Without a GET or GETD instruction having previously occurred in the main run, the spindle
or the axis can be made available again by RELEASE (axis) or WAITP (axis), for example. A
subsequent GET leads to a GET with a preprocessing stop.
6.4.12

Exclusively PLC-controlled axis and permanently-assigned PLC axis

Exclusively PLC-controlled axis
Activation
The exclusively PLC-controlled axis is activated via:
MD30460 $MA_BASE_FUNCTION_MASK, bit 4 = 1
Note
If an attempt is made to assign an exclusively PLC-controlled axis to the NC program or to
request the axis for the NC program, then this is rejected with Alarm 26075. Analog to this,
Alarm 26076 is signaled for a permanently-assigned PLC axis.
For an exclusively PLC-controlled axes, which is not a permanently assigned PLC axis, then
the following functions are permitted:
● JOG motion of the axis via the traversing keys or handwheel
● Referencing the axis
● Traversing the axis via the function block FC18 (for 840D sl)
● Traversing as permanently assigned PLC axis
● Traversing as oscillating axis (pre-condition: the "oscillation" option is available.)
Axis control
If an axis is in the neutral state, it can be controlled by the signals AXRESET, AXSTOP and
AXRESUME, effective in the channel.
486
Reference:
Function Manual Extended Functions; "Oscillation (P5)"
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions