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

Mode Groups, Channels, Axis Replacement (K5)
Axis/spindle replacement
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

Function
The conditions for controlling an axis from the PLC are activated via machine data MD30460
$MA_BASE_FUNCTION_MASK with bit 4 = 1 and bit 5 = 1.
PLC axis is controlled by PLC exclusively
The exclusively controlled PLC axis is activated by machine data
MD30460 $MA_BASE_FUNCTION_MASK with Bit 4 = 1
Alarm 26075 is generated if an attempt is made to assign an axis under exclusive PLC
control to the NC program or to request the axis for the program. Alarm 26076 is generated
in the same way for a PLC axis with fixed assignment.
Axis is exclusively PLC controlled and not a permanently assigned PLC axis
For an axis, which is not a permanently assigned PLC axis, controlled exclusively by the
PLC in this way, the following functions are allowed:
● JOG movements of the axis via traversing keys or handwheel,
● Axis homing,
● Traversing of the axis via the function block FC18,
● Traversing as permanently assigned PLC axis
● Traversing as oscillation axis with required oscillation option
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.
492
References:
/FB2/ Function Manual, Extended Functions; "Indexing Axes" (P5)
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions