Expert
Logger
Scaling
If a PROFIBUS master sends values that require conversion, enable
Scal-
ing
and enter
Min / Max
values to convert from the
Input value
to the
Scale value .
option is used, scaling takes place in the
opposite direction: 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 number).
Using the channel as output
If you create a PROFIBUS channel as an output, you can send data from
the
Delphin
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
Application
enables the output value to be manually set via the
DataService Configurator or automatically set via a
ProfiSignal
applic-
ation. The source type is converted to the type given in
Data type
(refer
).
Inherit status
(for
Channel
settings only): The status of the input channel
is used, but not output to the PROFIBUS itself.
4.12.4.3
PROFIBUS logger protocol
You must run the COM connection in the
PROFIBUS log-
ger
interface mode and set the PROFIBUS baud rate
(see
).
Create the PROFIBUS logger protocol channel via the context menu of the
COM connection:
Create channel
→
PROFIBUS logger protocol
.
211
Delphin Technology AG
Januar 2018
Expert
Logger
Manual
