Siemens Simatic 6ES7 157-0AD81-0 A0 Series User Manual

Diagnostics Using the User Program
10-18
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
10.4 Example of a diagnosis in redundant operation
Introduction
This example shows the call of a typical diagnosis of the active IM 157 in
redundant operation.
10.4.1 Task
The following assumptions have been made for this example:
 Both IM 157 have the diagnostic address 3FE
H
.
 The underlying PROFIBUS master system consists of 4 configured slaves
 Slaves have the addresses 4, 8, 12 and 20
 Configuration of the slaves:
– Slave 4 is a non-modular slave
– Slave 8 consists of one header module and 6 modules
– Slave 12 consists of one header module and 2 modules
– Slave 20 consists of one header module and 3 modules
 All configured slaves are engaged in data exchange with the active IM 157.
 Slave 8 reports a diagnosis:
– Modules 1 and 3 report diagnoses
– Module 1 reports a limit violation
– Module 3 reports an incorrect configuration

Siemens Simatic 6ES7 157-0AD81-0 A0 Series Specifications

General

Brand	Siemens
Model	Simatic 6ES7 157-0AD81-0 A0 Series
Category	Industrial Equipment
Language	English