Siemens SIMATIC ET 200SP Manual page 35

Parameters/address space
5.6 Address space
Evaluating the value status
If you enable the value status for the analog module, an additional byte is occupied in the
input address space. Bits 0 and 1 in this byte are assigned to a channel. They provide
information about the validity of the analog value.
Bit = 1: No fault is present on the channel.
Bit = 0: The channel is disabled or the wiring or the value created on the channel, etc. is
incorrect.
Address space for configuration as 1 x 2-channel AI 2×U/I 2-/4-wire HF
The figure below shows the assignment of the address space for AI 2xU/I 2-/4-wire HF.
Figure 5-6
Address space for configuration as 1 x 2-channel AI 2×U/I 2-/4-wire HF, QI
The figure below shows the assignment of the address space for AI 2xU/I 2-/4-wire HF.
Figure 5-7
Address space for configuration as 1 x 2-channel AI 2×U/I 2-/4-wire HF MSI
For the configuration as a 1 x 2-channel module (module-internal shared input, MSI),
channels 0 and 1 of module are copied to up to four submodules. Channels 0 and 1 are then
available with identical input values in various submodules. These submodules can be
assigned to up to four IO controllers when the module is used in a shared device. Each IO
controller has read access to the same channels.
The number of usable submodules is dependent on the interface module used. Please
observe the information in the manual for the particular interface module.
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Address space of the analog input module AI 2xU/I 2-/4-wire HF
Address space of the analog input module AI 2xU/I 2-/4-wire HF, QI
Analog input module AI 2xU/I 2-/4-wire HF (6ES7134-6HB00-0CA1)
Equipment Manual, 05/21, A5E51055079-AA