Gantner e.bloxx A5CR, Manual

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e.bloxx A5-1CR
CONFIGURATION
26
HB_EBLOXX-A5CR_E_V11.doc
Gantner Instruments Test & Measurement GMBH
5.4. Definition of Channels
Up to 8 channels (real plus virtual) can be defined for an e.bloxx. They define how the signals at the in- and outputs of
the e.bloxx will be processed. The value of every channel can be read out via the fieldbus. The channels are defined in
the Variable Settings Table in the Configuration Software ICP 100.
The Variable Settings Table is displayed on the corresponding register card in the Configuration Software ICP 100.
Picture 5.1 . - Example for Variable Settings Table
Here all 8 possible channels will be listed. To define a new channel just click on a free line in the table or change the
type of channel clicking on the first column
Type
in the corresponding line. In both cases a dialog box will be opened
where the type of the new channel has to be selected. There are 5 different types of channels:
- Analog Input Channel: Used to measure analog sensor signals. In the column
Sensor
the type of connected sensor is
selected (Resistance) and in the next column the corresponding
Type of Measurement
is set
(refer to chapter 4).
- Digital Output Channel: This is the relay output of the e.bloxx. Status signals can be output automatically by the
e.bloxx according to values of other channels or it is possible to set the state of the output via
bus.
- Arithmetic Channel: With this channel it is possible to perform calculations with the actual values of other channels
and with constant values. The results of the calculations are assigned to the arithmetic
channel and so arithmetic channels can also be used by other arithmetic channels for
calculations.
- Alarm Channel: An Alarm Channel can be used to monitor another channel and to generate an alarm
message if one of up to 4 definable thresholds are exceeded. The alarm messages can be
read via bus.
- Setpoint Channel: The value of this channel can be set via bus. This way it is possible to set a value via bus
which can be used by an arithmetic channel for further processing, e.g. to set a factor for
measurement by the user.
The settings for all defined channels will be displayed in the corresponding column of the channels. To change these
settings click on the corresponding field in the Variable Settings Table. One analog input can be defined.