Glossary - Siemens SINUMERIK 840D sl Function Manual

Glossary

Absolute dimensions
A destination for an axis motion is defined by a dimension that refers to the origin of the currently
valid coordinate system. See → Incremental dimension
Acceleration with jerk limitation
In order to optimize the acceleration response of the machine whilst simultaneously protecting
the mechanical components, it is possible to switch over in the machining program between
abrupt acceleration and continuous (jerk-free) acceleration.
Address
An address is the identifier for a certain operand or operand range, e.g. input, output, etc.
Alarms
All → messages and alarms are displayed on the operator panel in plain text with date and time
and the corresponding symbol for the deletion criterion. Alarms and messages are displayed
separately.
1. Alarms and messages in the part program:
Alarms and messages can be displayed in plain text directly from the part program.
2. Alarms and messages from the PLC:
Alarms and messages for the machine can be displayed in plain text from the PLC program.
No additional function block packages are required for this purpose.
Archiving
Reading out of files and/or directories on an external memory device.
Asynchronous subprogram
Part program that can be started asynchronously to (independently of) the current program
status using an interrupt signal (e.g. "Rapid NC input" signal).
Automatic
Operating mode of the controller (block sequence operation according to DIN): Operating
mode for NC systems in which a → subprogram is selected and executed continuously.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
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