Drivers, Parameters, Diagnostics Messages And Address Space; Concept Of The Driver And Diagnostics Blocks - Siemens SIMATIC ET 200SP HA Manual

Drivers, parameters, diagnostics messages and
address space
A.1

Concept of the driver and diagnostics blocks

Use outside the PCS 7 environment
The following information of the appendix relates to the use of the ET 200SP HA outside the
PCS 7 environment. If you do not plan to operate outside the PCS 7 environment, you do not
need the information in the appendix.
Tasks of the driver and diagnostics blocks (driver blocks)
In process control systems, certain demands are placed on the diagnostics/signal processing.
This includes the monitoring of modules, DP/PA slaves and DP master systems for
malfunctions and failures.
To enable this, blocks are available in the PCS 7 library that implement the interface to the
hardware including test functions.
These blocks perform two basic tasks:
● They provide signals from the process to the AS for further processing.
● They monitor modules, DP/PA slaves, and DP master systems for failure.
When the process signals are read in, these blocks access the process image input (or process
image partition) (PII) and when the process signals are output, they access the process image
output (or process image partition) (PIQ).
Concept
The concept of the driver and diagnostics blocks for PCS 7 can be characterized as follows:
● The separation between user data processing (CHANNEL blocks) and diagnostics data
processing (MODULE blocks)
● The symbolic addressing of the I/O signals
● The automatic generation of the MODULE blocks by CFC
Digital Input Module DI 16xNAMUR HA (6DL1131-6TH00-0PH1)
Manual, 11/2017, A5E39293880-AB
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