Siemens SINUMERIK 840D sl Configuration Manual page 59

Table 4-1 Use and content of the master copies of the PLC basic program
Folder Purpose
840D sl PLC Ba‐ This master copy is intended
sic Program to create a completely new
project.
840D sl PLC Ba‐ This master copy is used to
sic Program upgrade blocks after the firm‐
(upgrade) ware version of an NCU is up‐
dated, i.e. if you have carried
out a device replacement
(Page 33) or a migration.
SINUMERIK STEP 7 Toolbox V15.1
Configuration Manual, 12/2018, A5E46279635B AA
4.1 General information about the PLC program
Contents
The master copy contains all the blocks that you require for the maximum
configuration (31 axes, 10 channels).
Use of axis/channel DB
If your machine is using fewer axes or channels, you can either copy only
the required blocks or you can delete the blocks that are not required in the
project tree after copying.
If you have blocks in your project that are not required, this increases,
for example, the time required for the loading or export of the PLC symbols.
Use of ALMSG_DB [DB2]
This master copy contains ALMSG_DB [DB2] in the variant Exten‐
dAlMsg=False.
The used DB2 variant must match in the startup for parameterization of the
RUN_UP [FB1] in OB100 [OB100] (parameter ExtendAlMsg).
This master copy contains all the know-how-protected blocks that you re‐
quire for the maximum configuration (31 axes, 10 channels).
Blocks to be changed by the user are not included (no organization blocks
and not FC12 [FC12], Diagnose [FB29], DB4 [DB4], DB5 [DB5]).
Use of axis/channel DB
If your machine is using fewer axes or channels, you can either copy only
the required blocks or you can delete the blocks that are not required in the
project tree after copying.
If you have blocks in your project that are not required, this increases,
for example, the time required for the loading or export of the PLC symbols.
Use of ALMSG_DB [DB2]
This master copy contains ALMSG_DB [DB2] in the variant Exten‐
dAlMsg=False.
The used DB2 variant must match in the startup for parameterization of the
RUN_UP [FB1] in OB100 [OB100] (parameter ExtendAlMsg).
Programming the PLC
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