Description of blocks
3.1 Diagnostics block DIA_WLVL
Library SENTRON 3WL / 3VL for SIMATIC PCS 7
18
Function Manual, 11/2008, A5E02316914A-01
3.1.1
Calling OBs
The block must be installed in the processing sequence in the following OBs (occurs
automatically in the CFC):
OB1
Cyclic program
OB82 Diagnostic interrupt
OB83 Insert/remove module interrupt
OB85 Program error
OB86 Rack failure
OB100 Warm restart
Installation is performed automatically by means of the function "Generate Module Driver"
3.1.2
Called blocks
The block calls the following blocks:
SFC6
RD_SINFO
SFC51 RDSYSST
3.1.3
Function
The DIA_WLVL block is responsible for diagnosis of the 3WL / 3VL device.
If a 3WL / 3VL is directly connected to the DP master system, the block evaluates the acyclic
events that are relevant for 3WL / 3VL (start-up, DP station failure, module fault), generates
quality code and diagnostic information for the MOD_PAX0 block and provides the driver
block with status information via parameter output OMODE.
In the case of operation following a Y link DPV1, diagnostic information cannot be supplied
to the driver block. The block evaluates start-up, DP station failure and module faults and
provides the driver block with this information via parameter output OMODE.
This block is not used in the case of connection following Y link DPV0.
3.1.4
Message behavior
The block has no message behavior. The messages for DP station failure and module fault
are generated by the MOD_PAX0 block (in the case of direct connection to the DP master
system) or PADP_L00 (in the case of connection following the Y link DPV0) or OB_DIAG1 (in
the case of connection following the Y link DPV1).
Содержание SENTRON 3WL
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