Tuttnauer ELARA11-D, Technicial Manual

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1.6 06 - Write (only at the first time) to IO his ID and software number.
2. First Byte (Byte 1).
The first byte identifies ID functionality request. It can be one of the
numbers in a paragraph.
3. The second byte will present the data size if the main board asks to write
information to the IO. If the request is to read this byte will be 00.
4. The number of the request. This number is increased from 00-ff.
5. Check sum of the package
– to prevent mail functionality of the board if
there is interference in communication.
6. The information package transfer. The information contains number of the
input or output and data for/from each I/O.
Bytes identify number of input or output followed by two bytes containing
the data of the input or outputs.
7. Last byte contains a check sum of the entire package that is transferred.
This is to verify that the information is not corrupted.
Example
The main board sends:
01;00;0003;0004;
01 Ask to Read inputs.
00 not transfer information.
0003 Request number 3
0004 Checksum to verify the request
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