Block Listing As Table - Siemens SINUMERIK 840D sl Configuration Manual

Programming the PLC
3.1 General information about the PLC program
3.1.4

Block listing as table

In the following, you will find a list of all of the blocks of the SINUMERIK PLC basic program
that are included in the supplied master copy "840D sl PLC Basic Program".
The master copy "840D sl PLC Basic Program (upgrade)" contains the same blocks, except
for blocks with user-specific adaptations.
Further information
● Information about other blocks of the basic program (e.g. blocks generated at runtime on
the NCU) or the operational principle of the basic program is contained in the
SINUMERIK 840D sl / 828D Basic Functions Manual.
● Information about the changed handling of specific blocks compared with STEP 7 V5.x is
available in the "Migrating SINUMERIK projects" help.
Table 3- 2 Organization blocks (OB)
Address Name Description
OB1 OB1 Cycle OBs are higher-level logic blocks in the program which are cycli-
cally processed and in which you can program instructions or call
additional blocks.
OB40 OB40 Hardware interrupt OBs interrupt the cyclic program processing due to
a hardware event.
OB82 OB82 Diagnostic error interrupt OBs interrupt the cyclic execution of the
program if the diagnostic-capable module for which the diagnostic
interrupt was enabled detects an error.
OB86 OB86 A rack or station failure OB is called, for example, in the event of fail-
ure of a rack or station in the distributed I/O.
OB100 OB100 Startup OBs are processed once when the mode of the CPU switches
from STOP to RUN. After execution of the startup OB, the execution of
the cycle OB is started.
52
Called PLC basic program
block
GP_HP [FC2]
GP_PRAL [FC3]
GP_DIAG [FC5]
GP_DIAG [FC5]
RUN_UP [FB1] with gp_par
[DB7]
SINUMERIK STEP 7 Toolbox V14 SP1
Configuration Manual, 05/2017