X20 system modules • Other functions • X20DS438A
X20 system User's Manual 3.10
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4.26.5.9.13 Using IO-Link with FlatStream
With this module, the user has the option of communicating with the connected IO-Link device via FlatStream.
Communication takes place separately with respect to timing, i.e. output data is transferred completely from the
CPU to the module and checked. Only then does the module initiate the actual communication with the IO-Link
device.
The module acts the same way in the input direction. Messages from the IO-Link device must have been received
completely by the X2X module before the FlatStream message is generated and transmitted to the CPU.
4.26.5.9.13.1 General handling of FlatStream
Input/Output sequence
Rx/Tx bytes
(unchanged)
Control byte (unchanged)
Payload data for FlatStream (IO-Link information)
The user has a choice when using FlatStream.
•
Using FlatStream as described in the "FlatStream communication" section
•
Using the "AsFltGen" library to manage input/output sequence and FlatStream control bytes automatically
In both cases, a module-specific array with FlatStream payload data must be created in the application.
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