Siemens SINUMERIK Series Function Manual page 630

P2: Positioning axes
10.7 Control by the PLC
Channel-specific signals
All channel-specific signals act to the same extent on path and positioning axes.
Only the following signals are an exception:
● IS DB21, ... DBB4 ("Feedrate override")
● IS DB21, ... DBX6.2 ("Delete distance to go")
Axisspecific signals
Positioning axes have the following additional signals:
● IS DB31, ... DBX76.5 ("Positioning axis")
● Feedrate for positioning axes/spindles (FA)
● IS DB31, ... DBB0 ("Feedrate override") axis-specific
● IS DB31, ... DBX2.2 ("Distance to go/Spindle reset") Axis-specific deletion of distance to
Single-axis functions of PLC-controlled axes
The behavior of individual PLC axes can be manipulated in the following way with machine
data:
MD30460 $MA_BASE_FUNCTION_MASK
:
● Bit 4 = 1
● Bit 5 = 1
● Bit 6 = 1
● Bit 7= 1
For a PLC-controlled axis:
● The channel-specific NC/PLC interface signal DB21, ... DBX6.0 ("feed disable"), is active
● The channel-specific NC/PLC interface signal DB21, ... DBX36.3 ("all axes stationary") is
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. Alarm 26076 is
generated in the same way for a PLC axis with fixed assignment.
630
go
The axis is exclusively controlled by the PLC.
The axis is a permanently assigned PLC axis.
The channel-specific NC/PLC interface signal:
DB21, ... DBX6.0 ("feed disable")
is not active for the axis if this is a PLC-controlled axis.
The channel-specific NC/PLC interface signal:
DB21, ... DBX36.3 ("all axes stationary")
is setindependently of an axis if this is a PLC-controlled axis.
if bit 6 = 0 in machine data MD30460 $MA_BASE_FUNCTION_MASK.
only set if bit 7 = 0 in machine data MD30460 $MA_BASE_FUNCTION_MASK.
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Extended Functions