DAP Technology 1394, Руководство по эксплуатации

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Mil1394 Protocol support
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Fields 'value1a-hex' and 'value1b-hex' are both 16 bits size and are displayed as hexadecimal numbers.
The remaining message payload fields are all 32 bits size. The 'converted temp' and 'converted voltage'
fields are of the 'Convert' type. This means that a conversion is done on the raw bits values before it is
displayed.
As you can see in the 'Result' pane, the 'converted voltage' field in the table view has value 12 Volts. But
the stored value is in fact 4 as you can see in the layout view. This is the result of the automatic
conversion. In the 'Definition' pane the associated 'converted voltage' item has been selected and thus the
properties of this field are shown below the format defintions tree. There you can see that it is a 'Convert'
type field with 'increments' equal to 0.5, which means that when the raw value is incrementd by one, the
displayed value is incremented by 0.5. Furthermore, the base is 10, which means that if the raw value is
0, the displayed value is 10.
For the 'converted temp' an increment of 2 has been define, thus a raw value of 3 result in a displayed
value of 6. Note that it is also possible to define a 'base' value. The' base' value is always added to the
result value.
Note that the defintion checks for the correct 'Message Payload Length. If the length is not 32, then all the
payload will be displayed as hexadecimal data values of 32 bits size.
13.4.1.2. Format 2
The format definition 'Mil1394Format2' defines a format for which the message payload format depends
on the input parameter 'channel'. This is done using the 'switch' item with a 'case' for each supported