Siemens SINUMERIK 840D sl Function Manual page 792

P2: Positioning axes
11.6 Block change
Properties of type 3 positioning axis
With type 3 positioning axes the end-of-motion criterion can be programmed with FINEA,
COARSEA or IPOENDA. The block change condition can be set within the braking ramp of
the single-axis interpolation.
● The block change occurs (NC block finished) when all the path axes/spindles have
● The position end of the positioning axes can be defined in the programmable end-of-
● The following syntax applies for the position end of positioning spindles:
Command axes
Command axes respond immediately to any reprogramming; therefore, programming should
not be changed. Each individual axis has its own axis interpolator and its own feedrate. An
axis cannot be moved from the part program and from synchronized actions simultaneously.
The FINEA, COARSEA and IPOENDA end-of-motion criteria are applicable for the transition to
a neutral axis. The axis can then be used via the NC program, for example, as a PLC axis.
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fulfilled the programmed end-of-motion criteria. The positioning axis/spindle must also
have met the programmed block change condition within the braking ramp of the single-
axis interpolation. The block change can only be executed if both conditions are fulfilled.
motion criterion by means of one of the following NC commands
FINEA[axis]: "Exact stop fine" motion end or
COARSEA[axis]: "Exact stop coarse" motion end or
IPOENDA[axis]: End of motion when "IPO stop" is reached
FINEA[Sn]: "Exact stop fine" motion end or
COARSEA[Sn] "Exact stop coarse" motion end or
IPOENDA[Sn]: End of motion when "IPO stop" is reached
Sn: Spindle number, 0 ... max. spindle number or
Axis: Axis identifiers X, Y, Z.
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions