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 and external devices, such as routers or gateways, do not need to be connected. Combined with the BACnet MS/TP driver integrated within TwinCAT automation software, the terminal implements the BACnet protocol in compliance with Revision 12. 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 E-bus supply for use with the bias resistors (network bias).