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EL6861 | EtherCAT Terminal, 1-channel communication interface, BACnet-MS/TP, RS485, D-sub

Image similar, may contain optional accessories
EL6861 | EtherCAT Terminal, 1-channel communication interface, BACnet-MS/TP, RS485, D-sub

EL6861 | EtherCAT Terminal, 1-channel communication interface, BACnet-MS/TP, RS485, D-sub

Status LEDs
Serial interface
EL6861 | EtherCAT Terminal, 1-channel communication interface, BACnet-MS/TP, RS485, D-sub

EL6861 | EtherCAT Terminal, 1-channel communication interface, BACnet-MS/TP, RS485, D-sub

The EL6861 serial interface enables the connection of BACnet MS/TP devices (Master-Slave/Token-Passing) via an RS485 interface. Up to 32 MS/TP devices can be connected (up to 64 if ultra-low power transceivers are used). The EL6861 interface can only be used in combination with TwinCAT, then at least a CX9020 is required. When using TwinCAT 3, at least a CX81xx since the BACnet MS/TP driver integrated in TwinCAT implements the communication via the MS/TP protocol (BACnet Revision 12). The configuration is also done in TwinCAT.

The RS485 interface guarantees high immunity to interference 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).

The following devices can be typically connected to the EL6861:

  • frequency converters
  • pumps
  • drives (especially valve drives)
  • room control units
  • compact controllers (for example volume flow controllers)

Product status:

regular delivery

Product information

Technical dataEL6861
TechnologyD-sub, 9-pin
Devices32, up to 64 if ultra-low power transceivers are used
Data transfer channels1
Data transfer rates9600, 19,200, 38,400, 57,600, 76,800 and 115,200 baud (default: 9600 baud)
Interfaces1 x RS485
Termination resistorexternally via ZB3100 or ZS1031-3000 connector
Bias resistor (network bias)externally via ZB3100 or ZS1031-3000 connector
Cable lengthmax. 500 m twisted pair
Providing external supply1 x max. 5 V/20 mA, out of E-bus supply, short-circuit proof
Power supplyvia the E-bus
Distributed clocks
Electrical isolation500 V (E-bus/signal voltage)
Bit width in the process image128 x 8 bit input, 128 x 8 bit output, 16 bit control, 16 bit status
Configurationconfiguration via controller, TwinCAT
Current consumption power contacts
Current consumption E-bustyp. 170 mA
Special featurescan only be used with TwinCAT
Weightapprox. 55 g
Operating/storage temperature-25…+60°C/-40…+85°C
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/variable
Approvals/markingsCE, UL
Housing dataEL-24
Design formcompact terminal housing with signal LEDs
Materialpolycarbonate
Dimensions (W x H x D)24 mm x 100 mm x 52 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Marking
Wiringspecific push-in connection

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