Siemens sinumerik 840D sl Function Manual page 153

Monitoring functions effective
Analogous to normal NC axes, the following monitoring functions do not take effect for gantry
axes until the reference point is reached (IS "Referenced/Synchronized"):
• Working area limits
• Software limit switch
• Protection zones
The axial machine data values are used as monitoring limit values for the synchronized axes
as well.
Multi-channel block search
The cross-channel block search in Program Test mode (SERUPRO "Search Run by
Program test") can be used to simulate the traversal of gantry axis groupings in SW 6.2 and
higher.
Note
For further information about multi-channel block search SERUPRO, please refer to:
References:
/FB1/ Function Manual, Basic Functions, Mode Group, Channel, Program Operation Mode
(K1), Program Test Section
2.3 Start-up of gantry axes
General information
Owing to the forced coupling which is normally present between leading and synchronized
gantry axes, the gantry axis grouping must be started up as if it were an axis unit. For this
reason, the axial machine data for the leading and synchronized axes must always be
defined and entered jointly.
If the synchronized axis is being overloaded by the leading axis due to reduced dynamics,
this is acknowledged with alarm 10656.
References:
/IAD/Start up manual
Special points to be noted with regard to starting up gantry axes are described below.
Special functions: Gantry Axes (G1)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Detailed description
2.3 Start-up of gantry axes
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