User manual for Digital Indicator and cooperating software
2.
GENERAL CHARACTERISTICS
•
Multifunctional
designed for displaying current values and presentation of technological
parameter trends in graphic form. All measured parameters must be available in
0-20 mA or 4-20 mA (this can be for example pressures, levels, humidity,
temperatures, forces, etc.).
•
Configurable measurement and control input
The unit has up to 8 channels of 0-20 mA (4-20 mA) current signals. Each signal
can be freely configured and described. The internal analogue-digital converter has
a 12 bit resolution, which provides high measurement resolution results.
Additionally, individual alphanumeric description (text) of each of the input channels
is possible.
•
Fast serial interface
The digital indicator is fitted with a galvanic insulated RS 485 interface, programmed
with ModBus RTU transmission protocol. This enables the connection of a number
of digital indicators into the network, remote collecting of data from each unit and
also remote configuration. The application of the RS 485 interface instead of RS
232 is due to the possibility of achieving high transmission speeds using
transmission lines of larger length than is possible with the RS 232 interface.
•
Wide range of power supply voltage and external sensor power supply
The built-in pulse power supply allows power to be supplied to the unit with
85...
230
...260V AC/DC voltage or 16...
24
...35 AC, 19...
24
...50 DC voltage
(depending on version). The voltage for powering the sensor and converters is
connected to the rear terminal strip: 24V DC ±5% / max. 200mA.
•
Legible graphic display
The 128 x 64 points display with a backlight mounted on front of the unit is a big
advantage of the digital indicator. It allows the display of trend graphs for each
channel separately. Different operation modes provide the possibility of selecting
and adjusting the method of data presentation depending on the user's
requirements. Additionally, it is possible to set the display to show one current value
measured for a selected channel.
•
Easy configuration
There are 6 keys on the front of the digital indicator that enable the configuration of
the unit. The menu assisted with full text descriptions makes the unit configuration
process quite easy. However, due to a significant number of configured parameters
it is advised to use the attached configuration software for PCs.
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