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Siemens AG
Entry type: Application example Entry ID: 109746939, Entry date: 07/29/2019

Logging Process Values and Alarms with WinCC (TIA Portal)

  • Entry
  • Associated product(s)
Logging compendium. Description of different logging concepts provided by WinCC (TIA Portal).

Siemens offers several products and solutions for logging process values and alarms.

GMP data collection (logging of user actions)

Fig. 01

The objective of this application example is to help you find the logging concept that best suits your requirements and, resulting from this concept, …

  • determine the hardware.
  • achieve optimum performance.
  • provide the greatest possible security in terms of "access protection".
  • ensure output/evaluation.

The application example provides a selection aid for the different logging concepts. This allows you to develop a concept/solution before the actual configuration of logs. 

Program examples
In addition, the application example describes the following program examples.

  • Data log access via Miniweb
Using the example of a Comfort Panel, the document shows how to externally access the Comfort Panel's memory card with the stored data logs.
  • Evaluation of a data log
    The TxT or CSV file is evaluated by importing the data into an "Excel template".
    Then the data can be output using an automatically generated "trend chart".
  • Logging STRING tags
    The tags are logged with the aid of a script or as "discrete alarms".
  • Reading out the data of an RDB log
- Reading out and displaying the data of an RDB log using an Excel spreadsheet.
- Reading out the data using SQLite.

WinCC (TIA Portal) trainings near you
WinCC (TIA Portal) and panels, basic training
WinCC (TIA Portal) and panels, advanced training 
WinCC Professional, system course

Additional Keywords
Data backup, backup, historical values, CAS, log, logs, save, back up, collect, store, keep, protocol, statistics, data log, logging, data logger, mean, min, max, minimum, maximum, geometric mean, histogram, distribution, row, matrix
Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit
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