Siemens SINUMERIK 840Di Function Manual page 5

A Description of Functions contains the following chapters:
• Brief description
• Detailed description
• Constraints
• Examples
• Data lists
Technical information
The following notation is used in this documentation:
Signal/data Notation
NC/PLC interface ... NC/PLC interface signals:
signals Signal data (signal name)
...
Machine data ... Machine data:
<Type><Number> <Complete Identifier>
(<Meaning>)
...
Setting data ... Setting data:
<Type><Number> <Complete Identifier>
(<Meaning>)
...
Basic Machine
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Note
Detailed descriptions regarding data and alarms are provided for:
- Machine and setting data: Electronic only on DOConCD or DOConWEB
- NC/PLC interface signals: /FB1/ NC/PLC interface signals (Z1)
- Alarms: /DA/Diagnostics Guide
Example
When the new gear step is engaged,
the NC/PLC interface signals
DB31, ... DBX16.0-16.2 (Actual gear step A to C)
and
DB31, ... DBX16.3 (Gear changed)
are set by the PLC program.
The master spindle is the spindle stored in machine
data:
MD20090 $MC_SPIND_DEF_MASTER_SPIND
(Initial setting for master spindle on channel).
Setting data:
SD42800 $SC_SPIND_ASSIGN_TAB[0]
(Spindle number converter)
contains the logical master spindle.
Preface
v