Delphin ProfiMessage, Hardware Manual

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Profi Message
l
Byte pattern
To display the different byte and word order combinations, a hex value (a ran-
dom number in the example) is shown with the resulting byte pattern of a
message.
Scaling
If a PROFIBUS master sends values that require conversion, enable Scaling and
enter Min / Max values to convert from the Input value to the Scale value .
If the Use channel as output option is used, scaling takes place in the opposite dir-
ection: Enter the range from the source data in Scale value and the range for the
output signal in Output value .
Without scaling, the channel's data type is that entered under
Data type . When scaling is enabled, the floating data type is
always used for the channel.
This also applies when the channel is used as an output: When
scaling is enabled, the channel must have the floating
data type ,
otherwise you have to use the type under Data type.
Scaling example
In the above image, a conversion takes place from 2000 (integer value) to 200
(°C), i.e. it returns a decimal point despite transmission of an integer (whole num-
ber).
Using the channel as output
If you create a PROFIBUS channel as an output, you can send data from the Del-
phin device to other PROFIBUS users.
Enter the data for the message to be sent in a similar way to a PROFIBUS input. You
must also enter the
Source (of the signal).
Enter either a constant for the Source ( Manual value ) or select Channel and an
existing channel in the device for which a value is to be output. Selecting Applic-
ation enables the output value to be manually set via the DataService Configurator
or automatically set via a ProfiSignal application. The source type is converted to
the type given in
Data type (refer also to Scaling ).
Inherit status (for Channel settings only): The status of the input channel is used,
but not output to the PROFIBUS itself.
4.8.3.3 Modbus RTU Slave/Master
Use the Main settings tab to enter the general settings for the interface (baud rate,
number of data bits etc.) for the relevant COM interface. Refer to COM interface,
UART settings .
Use the context menu of the COM connection to create the protocol for Modbus :
Create channel
→
Modbus RTU master/slave protocol .
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Delphin Technology AG
Dezember 2015
Profi Message Manual