Communication EL6601, EL6614 Communication | Ethernet switch port terminals EtherCAT Terminal 194 The EL6601 and EL6614 Ethernet switchport terminals serve the local connection of arbitrary Ethernet devices to the EtherCAT system. The EtherCAT system relays the Ethernet communication of the connected devices fully transparent and collision-free. The EL6614 Ethernet switchport terminal has an integrated 5-port switch. It manages the data from the EtherCAT system and the four RJ45 ports. In full-duplex mode, the terminal enables the collision-free communication of the connected devices with one another. The EL6601 and EL6614 are suitable for transmitting and receiving “normal” non-real-time-critical Ethernet frames, e.g. with TCP/IP contents. The throughput specified in the documentation must be observed. TwinCAT, as a “virtual switch”, manages these frames at the IPC Ethernet port, which is configured as an EtherCAT device. In addition, the EL6601 and EL6614 can appear as a publisher/subscriber like a real-time Ethernet device and can be configured as such in TwinCAT. Real-time data are preferred by the terminal and processed synchronously with the EtherCAT cycle. In this way, several hundred bytes of process data can be transmitted and received cyclically, up to < 1 ms. Ethernet switch port terminal, 1 port Ethernet switch port terminal, 4 ports, internal switch Technical data EL6601 EL6614 Ethernet interface 10BASE-T/100BASE-TX Ethernet with 1 x RJ45 10BASE-T/100BASE-TX Ethernet with 4 x RJ45 Data transfer rates 10/100 Mbit/s, IEEE 802.3u auto-negotiation, half or full duplex at 10 and 100 Mbit/s possible, automatic settings Cable length up to 100 m twisted pair up to 100 m twisted pair +60 °C +60 °C -25 °C -25 °C Protocol all Ethernet (IEEE 802.3)- based protocols, store and forward switching mode all Ethernet (IEEE 802.3)- based protocols, store and forward switching mode Current consumption – – power contacts Current consumption typ. 310 mA typ. 450 mA E-bus Distributed clocks – – Special features support of RT Ethernet, publisher/subscriber, DHCP/BootP address allovation (1 device) support of RT Ethernet, publisher/subscriber, DHCP/BootP address allovation (1 device) Operating temperature -25…+60 °C -25…+60 °C Approvals CE, UL, Ex CE, UL, Ex Weight approx. 75 g approx. 95 g Further information www.beckhoff.com/EL6601 www.beckhoff.com/EL6614 We reserve the right to make technical changes.
EL6688 Communication Communication | IEEE 1588 external synchronisation The Precision Time Protocol can be used in order to generate an identical time base within an application, i.e. over several networks. PTP is a protocol that secures the synchronicity of the time settings of several devices in a network and which is defined in IEEE 1588 standard as the protocol standard for the synchronisation of distributed clocks in networks. As opposed to the NTP (Network Time Protocol), the emphasis in PTP is on higher accuracy. The applicational synchronisation can be implemented using TwinCAT and the EL6688 IEEE 1588 External Synchronisation Interface. If the PTP Ethernet frames are routed by switches in a larger network, then PTP-compatible switches should to be used in order to attain the highest possible synchronisation accuracy. These enter the self-caused data delays into the correction values provided in the PTP data. In this way, the accuracy of the synchronisation of the master to the slave is not affected negatively by the transmission delays. The EL6688 is the simplest way to synchronise an EtherCAT system with appropriate interface devices to the global world time via GPS or radio transmitters such as DFC77. If more than two EtherCAT systems are to be synchronised with one another, the EtherCAT Terminal is likewise the means of choice. Technical data Ethernet interface Data transfer rates Cable length IEEE 1588 external synchronisation interface EL6688 10BASE-T/100BASE-TX Ethernet with 1 x RJ45 10/100 Mbit/s, IEEE 802.3u auto-negotiation, half or full duplex at 10 and 100 Mbit/s possible, automatic settings up to 100 m twisted pair The EL6688 EtherCAT Terminal is a device in the IEEE 1588 synchronisation system that supports the Ethernet-based precision time protocols PTPv1 (IEEE 1588-2002) and PTPv2 (IEEE 1588-2008). On the one hand, the EL6688 is an IEEE 1588 clock (master or slave), which is synchronised within the scope of the protocol accuracy. On the other hand, it is synchronised by the EtherCAT master as an EtherCAT Terminal in the distributed clocks system, or it provides the reference clock for the EtherCAT system. To do this, it only needs to be selected as the “reference clock” in the TwinCAT System Manager. This way, a consistent timebase can be created across applications for any number of spatially separated TwinCAT EtherCAT systems and machine sections, e.g. for applications with axes or measurement technology. The compact EtherCAT Terminal enables flexible deployment depending on the application requirements. EtherCAT Terminal 195 IEEE 1588 Applicational synchronicity in the network thanks to distributed clocks according to IEEE 1588 Protocol PTPv1 (IEEE 1588-2002), PTPv2 (IEEE 1588-2008) Current consumption – power contacts Current consumption E-bus typ. 310 mA Distributed clocks yes Cable length up to 100 m twisted pair Special features usable in TwinCAT as a reference clock Operating temperature 0…+55 °C Approvals CE, UL, Ex Weight approx. 75 g Further information www.beckhoff.com/EL6688 We reserve the right to make technical changes.