EL6861 EtherCAT Terminal supports BACnet MS/TP interface.

Press Release Summary:

Combined with BACnet MS/TP driver integrated within TwinCAT automation software, EL6861 EtherCAT Terminal is used for monitoring and controlling BACnet-compatible field devices like pumps, drives, frequency converters. Enabling connections of up to 64 devices with RS485 transceivers, EL6861 offers 1 x 5 V DC short-circuit proof at 20 mA from E-bus supply.

Original Press Release:

New BACnet MS/TP Interface from Beckhoff Connects up to 64 BACnet Field Devices

EL6861 EtherCAT Terminal connects with RS485 low power transceivers

With the introduction of the new EL6861 EtherCAT Terminal, Beckhoff now supports BACnet MS/TP (Master Slave/Token Passing) in addition to BACnet/IP for building automation. This serial interface can be used to directly control and monitor BACnet-compatible field devices, such as pumps, drives, frequency converters or similar, as sub-bus systems without the need for additional gateways or routers. Up to 64 devices with RS485 low power transceivers can be connected to this I/O terminal. In addition, several terminals can be operated in parallel to scale the number of supported MS/TP channels.

Using the 1-channel BACnet MS/TP interface, hardware and engineering costs can be significantly reduced since configuration is performed centrally in the TwinCAT System Manager from Beckhoff and external devices such as routers or gateways are no longer required. Combined with the BACnet MS/TP driver integrated within TwinCAT automation software, the EL6861 terminal implements BACnet in compliance with Revision 12 of the protocol. The terminal can also be used locally without routing to the BACnet/IP network.

The RS485 interface guarantees high interference immunity through electrically isolated signal transmission. The EL6861 provides 1 x 5 V DC at 20 mA (electrically isolated, short-circuit-proof) from the EtherCAT E-bus supply for use with bias resistors (network bias).

For more information:

Beckhoff BACnet Solutions http://www.beckhoff.com/english.asp?highlights/bacnet/default.htm

EL6861 Serial Interface http://www.beckhoff.com/english.asp?ethercat/el6861.htm

Beckhoff Automation is a provider of advanced and open automation solutions based upon proven technologies for customers to implement high performance control systems faster and at a lower overall cost than traditional PLC and motion control systems. Beckhoff’s “New Automation Technology” product range includes PC-based control, industrial PCs, automation controllers, operator interfaces, I/O, servo drives and motors. With representation in more than 60 countries, Beckhoff is well-positioned to provide global sales and service to its customers. Beckhoff sales and service are handled directly, with no intermediaries involved for exceptional customer service and consultation.


Shane Novacek

Beckhoff Automation LLC

13130 Dakota Ave

Savage, MN 55378

Phone: 952-890-0000 

Fax: 952-890-2888


E-mail: beckhoff.usa@beckhoff.com


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