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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 diagnostic 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 diagnostic blocks for PCS 7 can be characterized as follows:

● The separation between user data processing (CHANNEL blocks) and diagnostic 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 8x24...125VDC HA (6DL1131-6DF00-0PK0)

Manual, 11/2017, A5E39288633-AB

[ID: 96680491787]