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Function Description
WAGO-I/O-SYSTEM 750
750-375 PROFINET IO advanced Fieldbus Coupler
Manual
Version 1.1.0
7.4
Process Data Architecture
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7.4.1
Basic Structure
A node can consist of a mixed arrangement of analog and digital, system and
special function modules.
For the configuration only I/O modules are taken into account, which exchange
process data on the internal bus (K-Bus) with the fieldbus coupler (data width or
bit width greater than 0).
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The input and output process images which are exchanged with the respective
IOC using real time frames are only available on a successful connection
establishment to the particular IOC.
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Additional Information
For the number of input and output bits or bytes of the individual I/O modules,
refer to the corresponding description of the I/O modules.
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For the local input and output process data image, the data of the configured I/O
modules is stored in the order of its position next to the fieldbus coupler in the
respective process image.
The size of the process image is determined by the configuration data of the
fieldbus coupler and of the I/O modules connected to it.
If the maximum size is exceeded in the respective process image, an error
message appears in the configuration software being used.
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The process image is limited to 512 bytes of input or output data. Thus, up to 250
I/O modules can be connected to the fieldbus coupler until the process image
reaches a maximum size of 512 bytes in the input and/or in the output direction.
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More information on configuration limits!
For additional information to the configuration limits refer to "Configuration
limits" chapter.
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