A
03.04 Appendix
B Terms
Messages
All messages programmed in the parts program and -> alarms
recognized by the system are output on the operator panel in plain
text with the date and time and a symbol indicating the cancel
criterion. The display is divided into alarms and messages.
Measuring circuit
• SINUMERIK FM-NC: The required measuring circuits for axes and
spindles are normally integrated in the control module. In total. A
maximum of 4 axes and spindles can be realized, with a maximum
of up to 2 spindles.
• SINUMERIK 840D: The position encoder evaluation is located in
the SIMODRIVE 611D-drive modules. The maximum configuration
is 8 axes and spindles in total, with up to 5 spindles.
Metric measurement
system
Standardized system of units: for lengths in millimeters (mm), meters
(m), etc.
Mirroring
Mirroring inverts the signs of the coordinate values of a contour with
respect to an axis. Mirroring can be applied to more than one axis at a
time.
Mode group
At all times all of the axles/spindles are assigned to precisely one
channel. Each channel is assigned to one operating mode group.
The same -> mode is always assigned to the channels in a mode
group.
Mounting rail
A mounting rail is used to attach the modules of an S7-300.
Multipoint interface
The multipoint interface (MPI) is a 9-pole Sub-D interface. A
configurable number of devices can be connected to a multipoint
interface and then communicate with each other.
• Programming devices
• Operator control and monitoring equipment
• Further automation systems
The parameter block “Multipoint Interface MPI” of the CPU contains
the -> parameters which define the properties of the multipoint
interface.
Siemens AG, 2004. All rights reserved.
SINUMERIK 840D/840Di/810D Operator’s Guide Handheld Terminal 6 (BAH) - 03.04 Edition A-155
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