• Clear text operator guidance on back lighting LCD display 
  • % Stainless steel – at a high protection class for table-top and wall mounting. 
  • % Top-hat rail design 
  • % Built-in legal-for trade memory (optional) 
  • % Fieldbus-compatible 
  • % Ethernet interface, can also be used for configuration 
  • % USB cable for optional α/n PC keyboard 
  • % All components can be exchanged without re-verification



The DISOMAT® Opus weighing indicator is perfectly suited to all applications where weights are recorded, displayed and printed legal-for-trade. Results can be transferred to master systems for further processing.

DISOMAT Opus is also excellently suited to simple control jobs in process applications with its complete equipment of interfaces. This indicator fits easily into data processing and control systems with its extensive communication options, regardless of whether it’s PLC or PC.

Some typical applications are:

  • Platform scales without major control jobs
  • Bin weighers (fill level control and fill or discharge weighing)
  • Simple road weigh bridges and crane scales
  • Applications as weight transducers for PC-based weighing and data processing systems (such as truck scales).



DISOMAT Opus is available in three versions:

  •  The basic DISOMAT Opus mini VKG 20710 has a serial interface and an analog output
  •  The expanded DISOMAT Opus maxi design, VKG 20700 also has
  •  More serial interfaces
  •  Binary I/O
  •  A wide range of communication options.

Both indicators have a standard stainless steel console shaped case in protection class IP65 that is suited for table-top and wall mounting (cable outlet downward with wall mounting).

These indicators have an easily readable back lighting LCD display for showing weight with clear text operator guidance. Data is keyed in via flexible membrane keyboard with 9 or 21 keys.

Beyond that, there is the

  • VEG 20700 design for top-hat rail assembly in the control cabinet – also legal for trade and including a display.

This instrument also has extensive standard interface equipment that makes it suitable both for control and communication applications.

All instruments – including those with a keyboard – can be conveniently configured and calibrated via the DISOPLAN PC program.

Since Ethernet is increasingly becoming the communication standard even in industry, Opus maxi and the top-hat rail unit have a standard equipment 100 MBaud network connection
The following options are available

  • ƒ Legal for trade data memory
  • ƒ Remote PC keyboard (only with the Opus maxi)
  • ƒ Fieldbus cards to communicate via
  • Profibus DP-V0 or DeviceNet.



With as many as three serial interfaces, DISOMAT Opus is excellently equipped for exchanging data with its environment.
For example,

  • Printer
  • large display
  • Data processing

can be connected at the same time.
Two of the interfaces are designed as RS 232. The third (RS 485 2/4 wire) is especially suited to communication on the bus and at greater distances.

The Ethernet connector (10/100 MBaud) is operated in the control systems via the MODBUS/TCP protocol. Another alternative is calling up HTML pages stored in the instrument via a standard web browser. The instrument can also be configured via the Ethernet connector.

Beyond this, the standard fieldbus system

  • Profibus DP-V0 and
  • DeviceNet

can be connected via matching optional coupling modules.

Parallel signal interchange

For control jobs, DISOMAT Opus has the following parallel inputs and outputs (except Opus mini):

  • 4 optocoupler inputs 24 Volt
  • 2 NAMUR inputs (for instance, for proximity switches)
  • 4 relay outputs, suited for 230 VAC to switch a traffic light
  • an additional 24 V optocoupler output for quicker signals.

Beyond this, all instruments (including the mini) have a 12-bit analog output that can transfer weight or material flow to a PLC or display.


Operation and Settings

Standard DISOMAT operation is in German and English. All operator guidance is carried out and data is entered in clear text You can easily load other operating languages into the instrument via the PC-assisted DISOPLAN
configuration program (WINDOWS program) (Italian, French, Dutch, Polish, Slovakian; Slovenian; Spanish, Czech, Hungarian and Russian are presently available. Other languages are available at request).

DISOPLAN also allows:

  • setting all instrument parameters
  • calibrating the instrument
  • conveniently configuring the print pattern
  • read-out and display of weight signals
  • reading out the complete instrument configuration (backup)
  • restoring stored data into a DISOMAT. This means a substitute can be prepared at short notice.

All parameter and calibration data are stored power failure safe in the instrument. The real-time clock runs at least 7 days without a power supply.



Beyond the basic scale functions such as

  •  Acquire and clear tare
  • Zero positions
  • Print

DISOMAT Opus can also carry out a series of other functionalities. To use them, one of the ‘function variants’ in the instrument is activated. This puts DISOMAT into a configuration for specific applications that both
allocates the essential actions to the six function keys and assigns the inputs and outputs of the instrument to the matching signals.
The following function variants can be activated:

  • ƒ Cargo scale (weighing / printing / balancing)
  • ƒ Filling scale (one-component feeding)
  • ƒ Discharge scale (one-component feeding)
  • ƒ Crane Scale.



Variable print pattern formatting allows you to freely lay out your weighing report. You can e.g. print out the following along with the weight data:

  •  The date and time
  •  Serial no.
  •  Balance totals
  •  The number of balanced weighings
  • 5 strings with as many as 25 digits
  •  3 stored texts with 26 characters each.

You can conveniently format the printout in the DISOPLAN program. The user arranges all of the printing elements the way they should appear on the print-out later. You no longer have to spend a lot of time keying in
control sequences and the like.


Legal-for trade memory

The additional built-in legal-for-trade memory releases the user from the necessity of creating and archiving legal for trade vouchers on paper.



In spite of its low price, DISOMAT Opus has enormous processing performance. The 32-bit ARM controller also has sufficient power reserves for fast weighing processes, simultaneous operation of various
interfaces and also for future applications.

  • Cargo scale (weighing / printing / balancing)
  • ƒ Filling scale (one-component feeding)
  • ƒ Discharge scale (one-component feeding)
  • ƒ Crane Scale.


Our dongle strategy

Our proven strategy of the intelligent load cell plug (dongle) is also used in DISOMAT Opus: all of the scale’s relevant setting and calibration data are stored in the dongle. Since all of our instruments are calibrated at the factory for identical sensitivity, you can interchange the electronic equipment at any time if there is a defect. After attaching the dongle, the scale is correctly configured and calibrated again. This means that even legal for trade scales do not have to be recalibrated or reverified.


Pattern Approval

DISOMAT Opus is approved for non-automatic scales (throughout the European Union), with a maximum of 6,000 digits or as a multi-range / multi-interval scale with as many as 3 x 4,000 digits. Together with the maximum resolution of 0.6µV/increment value, this instrument is well equipped for sophisticated jobs such as with a high preload.