The DOPB series by Delta Electronics is a range of touchscreen operator panels with color TFT displays, designed for building intuitive human-machine interfaces at industrial facilities. DOPB panels provide process visualization, equipment parameter monitoring, and real-time control through a responsive touch interface.

The lineup covers models with screen sizes from 3 to 10 inches, allowing you to select the optimal solution for both compact control panels on machinery and full-featured operator stations with extended display capabilities.

DOPB Series Technical Specifications

All DOPB models feature a TFT matrix with a graphic touchscreen interface. The key differences between models lie in display size, resolution, and the availability of an Ethernet network interface:

Screen diagonal: 3", 4.7", 5.6", 7", 8", 10" — a wide selection for various applications.
Resolution: from 320x234 to 1024x600 pixels depending on the model.
Communication ports: RS232, RS422, RS485 in base models (S-series); additionally Ethernet in extended models (E-series).
Communication protocols: Modbus RTU/ASCII, Modbus TCP/IP (Ethernet models).
Display type: TFT, high-brightness color display.

Delta DOPB Operator Panel Models

Model	Diagonal	Interface	Protocol	Features
DOP-B03S211	3"	RS232/RS422/RS485	Modbus	Compact, 480x272 px
DOP-B03E211	3"	RS232/RS422/RS485/Ethernet	Modbus, TCP/IP	Compact with Ethernet
DOP-B04S211	4.7"	RS232/RS422/RS485	Modbus	480x272 px
DOP-B05S101	5.6"	RS232/RS422/RS485	Modbus	320x234 px
DOP-B07S411	7"	RS232/RS422/RS485	Modbus	800x480 px, basic
DOP-B07PS515	7"	RS232/RS422/RS485	Modbus	800x480 px, enhanced
DOP-B07S411K	7"	RS232/RS422/RS485/Ethernet	Modbus, TCP/IP	800x480 px, Ethernet
DOP-B07E515	7"	RS232/RS422/RS485/Ethernet	Modbus, TCP/IP	800x480 px, Ethernet
DOP-B07PS415	7"	RS232/RS422/RS485	Modbus	800x480 px
DOP-B07S415	7"	RS232/RS422/RS485	Modbus	800x480 px
DOP-B07E415	7"	RS232/RS422/RS485/Ethernet	Modbus, TCP/IP	800x480 px, Ethernet
DOP-B08S515	8"	RS232/RS422/RS485	Modbus	800x600 px
DOP-B08E515	8"	RS232/RS422/RS485/Ethernet	Modbus, TCP/IP	800x600 px, Ethernet
DOP-B10S615	10"	RS232/RS422/RS485	Modbus	1024x600 px
DOP-B10E615	10"	RS232/RS422/RS485/Ethernet	Modbus, TCP/IP	1024x600 px, Ethernet

DOPB Panel Applications

Delta DOPB operator panels are widely used across various industrial sectors:

Production line automation: visualization of conveyor systems, packaging machines, and CNC equipment operation.
Water supply and treatment systems: monitoring of levels, pressure, and pump station control in conjunction with variable frequency drives.
HVAC systems: displaying temperature modes and fan speeds.
Power engineering: monitoring parameters of generator sets and distribution panels.

DOPB panels are programmed using the free DOPSoft environment from Delta Electronics, which supports drag-and-drop screen building, libraries of ready-made graphic objects, and macros. Communication with Delta PLCs of the DVP and AS series is established directly via serial ports or Ethernet.

Other Operator Panel Series

In addition to DOPB, the Delta panel catalog features the DOPA series (economy class) and other models. For projects with other manufacturers, consider Kinco panels and Schneider Electric panels.

Warranty and Support

All Delta DOPB operator panels come with an official manufacturer warranty. Our engineers provide technical support for connection, communication setup, and HMI project programming in DOPSoft. We will help you select the optimal model for your application — contact us for a consultation.

Frequently Asked Questions

What is the difference between an HMI panel and a PLC?

A PLC runs the automation logic, while the HMI shows the machine state and sends operator commands to the controller or VFD. If you need I/O and control logic, use a PLC. If you need a screen with buttons, alarms and setpoints, use an HMI.

Which HMI screen size should I choose for a control cabinet?

For a simple machine, 4.3-5.7 inches is usually enough. A 7-inch panel works well for pump stations, ventilation and small machines. Choose 10.1 inches or larger when the operator needs trends, recipes, alarm logs or several mimic screens.

Does an operator panel need Ethernet?

Ethernet is useful for Modbus TCP/IP, several controllers, remote service or connection to the plant network. If the panel is next to one VFD and communicates over RS-485, Modbus RTU is often enough.

Can an HMI be connected directly to a VFD?

Yes, if the VFD supports Modbus RTU or Modbus TCP and the register map is available. For Veichi drives we often check VI20 or VI30 panels because they fit Veichi-based control cabinets well.

What information is needed to replace an old operator panel?

Send the old panel part number, cutout size, supply voltage, port type, protocol and the project file if it is available. Without the project file, the screen project often has to be rebuilt.

Can you select an HMI for a specific PLC?

Yes. Send the PLC or VFD model, required screen size and communication method. We will check the ports and suggest the series that fits the project best.