Field buses / Communication protcols

Key technology for the automation

Communication is the basic condition for modern automation solutions. Their flexible use with simple handling are indispensable prerequisites for Berghof Automation when implementing a product solution, from the simplest application to industry 4.0.
The communication options approved by Berghof meet the high demands of everyday industrial life and offer the greatest possible networking possibilities.

Depending on the area of application, there is a need for an adapted bus system. In addition to serial interfaces or conventional fieldbuses, Berghof Automation offers real-time and radio.

The following buses & protocols are currently available from Berghof as standard or interface modules, depending on the product version:

Buses & Protocols Description
Ethernet A technology that specifies software and hardware for wired data networks, which was originally intended for local data networks and is therefore also referred to as LAN technology.
EtherCAT A real-time Ethernet initiated by Beckhoff Automation. The protocol disclosed in IEC standard 61158 is suitable for both hard and soft real-time requirements in automation technology.
RS485 An industry standard for a physical interface for asynchronous serial data transmission. The symmetrical cable increases electromagnetic compatibility.
RS232 A standard for a serial interface commonly found on computers, developed in the early 1960s by the US standardization committee Electronic Industries Association (EIA).
Modbus RTU/TCP Modbus can be used to connect a master (e.g. a PC) and several slaves (e.g. measurement and control systems). There are two versions: One for the serial interface (EIA-232 and EIA-485) and one for Ethernet.
CAN/CANopen The CANopen standard describes the exchange of data in a CAN-based network. Both the basic communication mechanisms (communication profile) and the functionality of the communicating devices (device profile) are defined. This means that the interpretation of process data transmitted via the bus is also defined under CANopen.
BACnet A network protocol for building automation. It is standardized by ASHRAE, ANSI and as ISO 16484-5. BACnet can connect different language fieldbuses.
Profinet The open Industrial Ethernet standard of the PROFIBUS Nutzerorganisation e. V. for automation. Profinet uses TCP/IP and IT standards, is capable of real-time Ethernet and enables the integration of fieldbus systems.
EtherNET/IP based on standard TCP and UDP supports EtherNet/IP the continuity between office network and the system to be controlled. EtherNet/IP devices support DHCP and BootP in assigning the IP address.
J1939 Describes the communication on a CAN bus in commercial vehicles for the transmission of diagnostic data (e.g. engine speed, temperature) and control information.
OPC-UA An industrial M2M communication protocol. As the latest of all OPC Foundation specifications, OPC UA differs considerably from its predecessors in particular in its ability not only to transport machine data (controlled variables, measured values, parameters, etc.), but also to describe them semantically in machine-readable form.
SNMP A network protocol developed by the IETF to monitor and control network elements (e.g. routers, servers, switches, printers, computers, etc.) from a central station. The protocol regulates the communication between the monitored devices and the monitoring station.
NTP Client A standard for synchronizing clocks in computer systems via packet-based communication networks. NTP uses the connectionless transport protocol UDP. It has been specially developed to enable reliable time indication over networks with variable packet runtimes.


The controller must adapt to the requirements of the application. For this reason, we also endeavour to offer you further communication options as you wish. In addition to the standardized media available in the product range, further products have already been successfully introduced in preparation or in application-related products.

Convince yourself of our flexibility.