Siemens SINUMERIK 880 SW 6 Planning Manual page 232

7 ELG-Specific Signals (DB 29)
7.2 Signals from ELG (DB 29)
FA OVERLAY ACTIVE
1 signal: An additional movement can be superimposed on the movement of the following
axis derived from the leading axes. This superimposed movement (positional
shift) can be specified in the following ways:
a) AUT mode:
In the NC part program (Incremental dimensioning G 91)
b) JOG or INC mode:
With the travel keys or handwheel
c) By the PLC:
With the "Path dimension" and "Division increment" command channel
functions.
0 signal: The following axis follows only the movements of the leading axes; no additional
movements can be superimposed (exception: handwheel, see FA OVERLAY
OFF).
Notes:
• The signal does not have any significance if the gearbox link is not selected
(LINK ACTIVE = 0).
• The following axis overlay can be switched with FA OVERLAY ON and FA OVERLAY OFF.
• The following axis overlay must be active for the "Semi-automatic centering" and "On-the-
fly synchronization" functions.
SYNCHRONIZATION ENABLED
1 signal: Synchronization of the following axis with the leading axis specified in the setting
data is enabled. The synchronization can now be initiated by the following means:
a) LINK ON:
With synchronization enabled, the following axis is synchronized with the
corresponding leading axis.
b) ACTIVATE NEW K
With synchronization enabled, the following axis is synchronized with the
corresponding leading axis when the gearbox link is switched to a new speed
ratio.
c) SYNCHRONIZATION START:
With synchronization enabled, synchronization of the following axis with the
corresponding leading axis can be requested explicitly with the
SYNCHRONIZATION START signal. When the gearbox link is switched off
(LINK OFF) the following axis is moved to the position specified in the setting
data.
0 signal: Synchronization is not enabled. The NC resets the signal to 0 when
synchronization is reached.
Note:
Synchronization enable is requested with the SYNCHRONIZATION ON signal.
FA 1: m=0
–
7 4
:
ü
FA 2: m=4
©
Siemens AG 1991 All Rights Reserved
01.93
DW m, bit 10
DW m, bit 9
FA 3: m=8
6ZB5 410-0HE02
SINUMERIK 880 (PJ)