Transmission Level - Festo EasyPort USB Manual De Instrucciones

9. EasyPort USB command interpreter
9.3

Transmission level

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The data that are actually transmitted at the point of transmission
correspond for the most part to the data entered as ASCII characters at
the user level.
The following applies to data transmission:
Addresses and data values must be entered in hexadecimal format.
Data values provided by EasyPort USB are always returned as
hexadecimal numbers.
Floating point numbers are encoded.
Every message is closed with a CR (carriage return).
Every command for a particular address is answered.
The first letter is separated from each display or modify command.
Modify commands are provided with the actual data value in the
module. This data value is usually the same as in the command.
The determined value is added to the response to a display
command using the same notation as for a modify command.
Several examples of commands and responses to them are listed below.
The carriage return symbol <CR> is also included in these examples.
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