Functions; Support For I/O Modules With Expanded Input Data - Siemens SIMATIC ET 200M Operating Instructions Manual

Functions

8.1

Support for I/O modules with expanded input data

The IM 153-2BAx2 interface module supports I/O modules with expanded input data
(> 16 bytes). For more detailed information, refer to the documentation on the respective
modules.
Expanded output data are not supported.
For the ET 200M, this means that:
• The I/O module in use must support provision of expanded input data.
• The IM 153-2BAx2 supplies the substitute value "0" in the expanded input data of an I/O
module that is starting up or that has been removed.
• The total amount of input data must not exceed the following values:
– 128 bytes per slot
– 244 bytes per IM 153-2BAx2. i.e., per ET 200M
These limits are checked during configuration.
• "Standard" and expanded input data are internally consistent but not consistent relative to
each other.
The following figure illustrates this point.
The expanded input data are updated in longer time intervals than the "standard" input
data.
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Operating Instructions, 04/2022, EWA-4NEB7806006-09
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ET 200M