Siemens SINUMERIK 880 Programming Manual page 30

01.93
The machine units
• Slide 1, main spindle, auxiliary spindle
• Turret 1,
• Slide 2,
• Turret 2 and
• Loader
can be allocated to the channels of the SINUMERIK 880 according to the following scheme:
Channel
1 2
X1
Z1
S1
C
S2
Turning
and
milling
Mode
group >
Axes/
X1 Z1 S1
spindles
Channel structure: Programmable allocation of channels
A mode group contains those channels that, due to the operational sequence, must always
work simultaneously in the same mode. Within the mode group, any axis can be programmed
in any channel. In the above example, the loader has been assigned an own mode group. This
assignment permits Setting-up operation of the loader while workpieces are being
produced.
In addition to the 5 channels in which the programs for controlling the working units are run, 3
channels are reserved to be able to include future add-ons such as automatic tool retraction
in the case of tool breakage or coordination programs.
In the AUTOMATIC basic display, each channel is given its program number.
The channel structure allows the programs of the various channels to be processed
simultaneously and asynchronously. If synchronization is required it can be performed via the
PLC.
In each mode group as many axes can be traversed simultaneously in Jog mode as there are
channels for the mode group.
© Siemens AG 1991 All Rights Reserved
SINUMERIK 880, (PG)
Central
part program memory
3 4 5 6
T1 X2
Z2
(S1)
Turret
1
Slide 1 Slide 2
1
C S2 T1 X2 Z2 T2
6ZB5 410-0HD02
2 Fundamentals of Programming
2.9 Channel-specific programming
7 8
Max.
T2 Q1
16 chan-
Q2
nels with
Q3
SINU-
MERIK
880,
SW 6
Turret
2
Loader
2
Q1 Q2 Q3
2–19