Glossary - Siemens SINUMERIK 840D sl Programming Manual

Glossary

Absolute dimensions
A destination for an axis movement is defined by a dimension that refers to the origin of the
currently active 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 cancel criterion. Alarms and messages are
displayed separately.
1. Alarms and messages in the part program:
2. Alarms and messages from PLC
Archive
Reading out of files and/or directories on an external memory device.
Asynchronous subroutine
Part program that can be started asynchronously to (independently of) the current program
status using an interrupt signal (e.g. "Rapid NC input" signal).
Job Planning
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
Alarms and messages can be displayed in plain text directly from the part program.
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.
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