Siemens SINUMERIK 840Di Function Manual page 326

Detailed Description
2.1 General functionality
The movement to the destination point can be described as a path or positioning axis
movement. With positioning axes, the function FXS can be performed across block
boundaries. The function may also be selected for several machine axes simultaneously.
The FXST and FXSW commands are optional.
The travel path and the command which activates that function must be programmed in one
block (exception: Synchronized actions).
Examples
With machine axis identifiers:
X250 Y100 F100 FXS[X1]=1
X250 Y100 F100 FXS[X1]=1 FXST[X1]=12.3
X250 Y100 F100 FXS[X1]=1 FXST[X1]=12.3 FXSW[X1]=2
X250 Y100 F100 FXS[X1]=1 FXSW[X1]=2
References:
/PG/ "Programming Guide: Fundamentals"
Channel axis identifier with unambiguous machine axis assignment:
For the purpose of illustrating the differences in programming, chanel axis X is programmed
as the image of machine axis AX1 [or X1 (name in machine parameter:
MD10000 $MN_AXCONF_MACHAX_NAME_TAB)].
Programming with machine axis identifiers
FXS[X1] = 1
FXST[X1] = 10
FXSW[X1] = 5
Programming with channel axis identifiers
FXS[X] = 1
FXST[X] = 10
FXSW[X] = 5
All four of the following programming lines have the same effect when the channel axis X is
imaged on the machine axis AX1, X1:
Z250 F100 FXS[AX1]=1 FXST[AX1]=12.3 FXSW[AX1]=2000
Z250 F100 FXS[X1]=1 FXST[X1]=12.3 FXSW[X1]=2000
Z250 F100 FXS[X]=1 FXST[X]=12.3 FXSW[X]=2000
Z250 F100 FXS[X]=1 FXST[X1]=12.3 FXSW[AX1]=2000
2-2
; Selecting X1
; New torque for X1
; New window for X1
; Selecting X1 -> X1
; New torque X1 -> X1
; New window for X -> X1
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
; mm
; mm
Travel to Fixed Stop (F1)