Communication EL6851 Communication | DMX master/slave terminal EtherCAT Terminal 206 DMX is the standard protocol for controlling professional stage and effect lighting equipment, which is used, for example, for the dynamic lighting of showrooms and salesrooms as well as for exclusive displays of light and colour in high-profile buildings, such as hotels and event centres. For static DMX light sources (e.g. spotlights), colour mixing and brightness values are transmitted, while moving DMX light sources (e.g. moving heads and scanners) receive additional spatial coordinates. The high data transfer rate of EtherCAT permits higher update rates of light settings, resulting in more harmonious changes of light and colour as perceived by the human eye. The EL6851 DMX master terminal allows the direct connection of up to 32 DMX devices and supports the transmission of the full DMX protocol width of 512 bytes in just one control cycle using EtherCAT. This way, random devices, such as scanners, moving heads or spotlights can be controlled (see illustration below). The EL6851-0010 DMX slave terminal acts as a link to the DMX world and enables professional stage and effect lighting to be implemented in conjunction with standard hardware. It takes on the information from the DMX master for the assigned automation equipment. This way, theatre and show stages can be constructed with standard hardware at reduced cost, but with full flexibility. The data from the DMX telegram are output on simple digital outputs, stepper motors or dimmer terminals. Furthermore, it is possible to transmit the DMX data to a DALI network and in this way to indirectly operate DALI ballasts with DMX. DMX master/slave terminal Technical data EL6851 EL6851-0010 Technology DMX master terminal DMX slave terminal Data transfer rates 250 kbit, one start bit, two stop bits Interfaces RS485, termination resistor can be switched, half duplex Number of channels 1 DMX devices DMX devices 1 5 1 5 1 5 120 2 6 2 6 3 7 4 8 The EL6851 EtherCAT Terminal is a DMX master terminal and enables connection of up to 32 devices without repeater. The DMX master terminal can send up to 512 bytes of data. At 250 kbit/s a maximum data rate of 44 kHz is thus possible. CX5000 Channel 1 MH1 Pan . 3 – Tilt 4 – Colourour . 7 – Speeded 8 – Iris . 10 FW2 Red (13 %) 11 – Green en (25 %) 12 – Blue (38 %) . 64 – – . 256 – – EL6851 DMX master Tilt Pan EK1100 EL6851-0010 DMX slave Data length max. 512 bytes Protocol DMX512 Current consumption – power contacts Current consumption E-bus typ. 130 mA Distributed clocks – Bus device max. 32 without – repeater Line impedance 120 Ω Special features supports RDM protocol, library available; electrically start address and data length can be set isolated Operating temperature 0…+55 °C Approvals CE, UL, Ex Weight approx. 55 g Further information www.beckhoff.com/EL6851 We reserve the right to make technical changes.
EL6861 Communication Communication | BACnet MS/TP interface RS485 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 (up to 64 if ultra-low power transceivers are used) can be connected. Use the EL6861 interface only in combination with TwinCAT and CX9020 or higher, 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) BACnet/IP Technical data Data transfer rates Interfaces Technology 1-channel BACnet MS/TP interface RS485, D-sub connection EL6861 9600, 19,200, 38,400, 57,600, 76,800 and 115,200 baud (default: 9600 baud) 1 x RS485 D-sub, 9-pin +60 °C -25 °C EtherCAT Terminal 207 CX9020 f1 f1 f1 f2 f2 f2 MVM M I–AB II–A III–B MVM M I–AB II–A III–B Current consumption – power contacts Current consumption typ. 170 mA E-bus Distributed clocks – Cable length max. 500 m twisted pair Operating temperature -25…+60 °C Approvals CE Weight approx. 55 g Further information www.beckhoff.com/EL6861 We reserve the right to make technical changes.