Mode Groups And Channels - Siemens SINUMERIK 840D Operator's Manual

4
Machine Operating Area
4.1 Data structure of the NC control

4.1.2 Mode groups and channels

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Function
Every channel behaves like an independent NC. A maximum of one
part program can be processed per channel.
· Control with one channel:
One mode group exists.
· Control with several channels:
Channels can be joined to form several mode groups.
Example:
Control with 4 channels, where machining is carried out in 2
channels and 2 other channels are used to control the transport of
the new workpieces.
BAG1 Channel 1 (processing)
Channel 2 (transport)
BAG2 Channel 3 (processing)
Channel 4 (transport)
Technologically related channels can be combined to form a mode
group.
Axes and spindles of the same mode group can be controlled by one
or more channels.
An operating mode group is either in operating mode "Automatic",
"Jog" or "MDI", i.e. several channels of an operating mode group can
never assume different operating modes.
Channel status with symbol (SW 6.2 or later)
The channel status and the channel operational messages are output
with symbols in the channel status line:
Channel status
Channel interrupted
Channel active
Channel RESET
Channel operational messages
Stop: Action is required
(e.g. cancel feedrate disable).
SINUMERIK 840D/840Di/810D Operator's Guide HMI Advanced (BAD) – 03.04 Edition
4
03.04
Ó Siemens AG, 2004. All rights reserved