S7 - Function Block "Prb Diagnostics - Siemens 6ES7 972-4AA02-0XA0 User Manual

User´s Guide Power Rail Booster
9.1.3 S7 – Function Block "PRB Diagnostics"
Function
This software is a function block for the SIMATIC S7. You can use the function block
in the ET200S, the S7-300 and the S7-400.
The function block receives via a digital input a square-wave pulse that corresponds
to several serially transferred bits. The system evaluates the square-wave pulse and
makes available the received diagnostics datum to the user program.
Advantages for users
• Detailed diagnosing of an error established by the PRB
• No longer necessary for time-consuming searches for the causes of errors
• Possible to quickly initiate selective measures to remove the error
Since function block PRB Diagnostics is a sample application for use in a plant,
Siemens AG offers users no warranty or support. You can download the library
containing the function blocks for your S7 project together with the user manual on
the Internet from Siemens Customer Support under ID: xxxxxx
Copyright © Siemens AG 2005 All rights reserved.
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6ES7 972-4AA02-0XA0
Version 12/2005
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