2.1 Data classes in the NC
Classification
All
control-relevant
data
is
classified into data classes regarding its later use in commissioning,
software upgrade, software update and component replacement. The data is classified
according to four data classes: M (Manufacturer), I (Individual), U (User) and S (System)
System (S) data class
This data class covers data in the Siemens and System directories on the CompactFlash Card.
For the rest of this document it will be referred to as "S".
Characteristics / properties of data class S
The data is automatically loaded the first time the system is switched on or during initialization
and activated as far as is necessary.
"S" class data cannot be backed up and is marked as "read only".
Data type Example
HMI: Siemens standard user interface and additional languages available
NC: Standard cycles, measuring cycles and JobShop cycles, definitions such as SGUD
and SMAC and all further NC active data of data class S provided by Siemens
PLC: Hardware configurations
Drives: Code and data (data descriptions, alarm descriptions, macros)
Manufacturer (M) data class
This data class covers
all data defined by the machine manufacturer (OEM) when a machine
in a model series is commissioned for the first time. For the rest of this document it will be
referred to as "M".
Characteristics / properties of data class M
Class M data is stored in a separate "Manufacturer" archive.
Data type Example
HMI: OEM dialogs (Easy Screen) and cycle support, alarm and message texts.
NC: Manufacturer cycles, MGUD and MMAC definitions and all NC active data with data
class M (no memory normalizing machine data)
PLC: PLC program, contents of the data blocks in this data class
Drives: all
Introduction and use of data classes
2.1 Data classes in the NC
CNC commissioning
30 Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
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