Address Space - Siemens SIMATIC ET 200AL Manual

4.4

Address space

The figure below shows the assignment of the address space for the analog input module
AI 4xU/I/RTD 4xM12 with value status (Quality Information, QI). If you are using PROFINET
and the value status was enabled, the addresses for the value status are available. The
value status is not available for PROFIBUS.
Figure 4-2
Configuration options of analog input module AI 4xU/I/RTD 4xM12
You have the following configuration options:
● Configuration 1: without value status
● Configuration 2: with value status
Evaluating the value status
If you enable the value status for the analog input module, a bit is also assigned in the input
address space. Bits 0 to 3 in this byte are assigned to a channel and provide information on
the validity of the analog value. The value status is independent of whether or not
diagnostics was configured.
Bit = 1: No error on channel.
Bit = 0: Error on channel.
Analog input module AI 4xU/I/RTD 4xM12 (6ES7144-5KD00-0BA0)
Manual, 08/2018, A5E32350124-AD
Address space
Parameters/address space
4.4 Address space
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