Outputs and Digital Input
Configuring Analog Output
VT300 Technical Manual, Rev. A4
66
Doc # TM-VT300-EN
To set output mode jumper (JP1):
Set jumper JP1 to the appropriate position, to define voltage output or current
voltage, as shown in the image below.
7.4.2
Setting Analog Output Parameters
The output can be set to the standard calibration, where 0 on the weight display is
output as 0mA or 4mA, and max on the display is output as 20mA. The output is
capable of driving 20mA into 1K Ohm load.
Alternatively, you can edit these zero and span calibration values. This is controlled
through the
CALIBRATION
parameter in
SYSTEM
>
D/A CAL
. When you set this
parameter to
USER
, a dialog opens which allows you to enter mA values for zero and
span.
There are several other analog output parameters, detailed in the table below.
Parameter Description
Values
CALIBRATION
Standard / custom zero and span
.
STD specifies that the scale should output 0mA at zero input
and 20mA at maximum input (or 0V at zero and 10V at
max).
USER allows user-defined zero and span values. These can
be defined using the parameters
ZERO D/A
and
FULL D/A
.
STD, USER
STD = Standard
(20mA max)
USER = User defined
zero and span
SCALE ERROR
Error output level
. Specifies whether scale errors should be
indicated as a low or high signal.
0mA, 24mA
OUTPUT
Current / voltage
. This parameter must correspond to the
hardware jumper, which defines whether output should be in
current or voltage (see section
7.4.1).
CURR, VOLTAGE
MODE
Net / gross
. Specifies whether the indicator should always
output gross weight, or output net weight when tare is
active.
NET, GROSS
