Beckhoff has extended its range of infrastructure components with the EtherCAT media converter for the bidirectional conversion of optical fibre to copper. The DIN rail-mountable devices are optimised for the use in highly deterministic EtherCAT networks with extremely short cycle times. They ensure fast control in the case of cable interruptions or the establishment of Hot Connect group connections. They are useful wherever EtherCAT is to be transmitted over long distances, where increased electromagnetic interference is to be expected, in the realisation of data links to rotating parts such as slip rings, or of data light barriers in high-bay warehouses with carriages that travel long distances.
Conventional Ethernet media converters do not meet the requirements for a highly deterministic EtherCAT network. In addition to that, standard convertors behave ‘transparently’ towards the bus, ie, they are not seen by the master, which has a disadvantageous effect on the diagnostic properties. This gap is now closed with the EtherCAT media converters for Industrial Fast Ethernet (100 Mbaud). The devices from the CU1521 series convert optical fibre physics to copper physics and vice versa. The CU1521 is suitable for multimode, the CU1521-0010 for single mode fibre optic and therefore significantly longer transmission links. Using the CU1561, POF (Plastic Optical Fibre), which is simple to install in the field, can be converted to copper physics.
The DIN rail-mountable CU1521 and CU1561 EtherCAT media converters are implemented with IP20 protection. They operate bidirectional and collision-free with constant delay and can be diagnosed as independent EtherCAT devices. In this way, unlike standard media converters, they enable fast link control and the safe closing of the EtherCAT strand even in the event of a fault. Since the transfer direction is relevant for the bus, the devices can be configured via a switch. This switch is also used to set the ‘Link Loss Forwarding’ function for the support of a ‘normal’ 100 Mbaud Ethernet network.
The CU1521 is useful in applications where EtherCAT is to be transmitted over distances of up to 2000 m between two stations or where increased electromagnetic interference on the bus is to be expected. The CU1561 is suitable for situations with increased electromagnetic interference and where simplified wireability is demanded.
The EP952x devices are conceived for applications requiring IP67 protection. Both media converters are suitable for multimode fibre optic cables. In addition to the copper branch, the 2-channel EP9522-0020 enables further optical fibre topologies to be configured via the second optical fibre port, while the single-channel EtherCAT Box EP9521-0020 is used for direct transfers between the two media.
Introduction to Part 2 loop signatures and process transfer functions
Fieldbus & Industrial Networking
The previous series of loop signature articles dealt with the basics of control loop optimisation, and concentrated on troubleshooting and ‘SWAG’ tuning of simple processes. In this new series, consideration will be given to dealing practically with more difficult issues like interactive processes, and with processes with much more complex dynamics.
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Nissei Plastic, an injection moulding machine manufacturer based in Japan is implementing a worldwide tend towards open automation systems from experienced specialists using PC and EtherCAT-based control technology from Beckhoff.
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This article is a continuation of Loop Signature 30 published in the last issue in this series, exploring reasons for non-linearities which may be encountered in feedback control loops
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Editor's Choice Motion Control & Drives
Special machine manufacturer, ruhlamat Huarui Automation Technologies has unveiled the second generation of its mass production line for flexible stators with bar winding (pins). This enables an extremely short production cycle and line changeover times, supported by PC- and EtherCAT-based control technology from Beckhoff.
Read more...PC-based control optimises robotic parts handling on plastics machinery Beckhoff Automation
Editor's Choice Fieldbus & Industrial Networking
NEO is a cartesian robot developed by INAUTOM Robótica in Portugal for parts removal on plastics machinery. Its aim is to increase system productivity. NAUTOM Robótica has entered into a strategic partnership with Bresimar Automação to increase the working speed of the cartesian robots using advanced control and motion solutions from Beckhoff. The result is a comprehensive, future-proof automation solution for its entire family of cartesian robots.
Read more...PC-based control for flat wire motors for electric vehicles Beckhoff Automation
Fieldbus & Industrial Networking
Special machine manufacturer, ruhlamat Huarui Automation Technologies unveiled the second generation of its mass production line for flexible stators with bar winding. This enables extremely short production cycle and line changeover times, supported by PC- and EtherCAT-based control technology from Beckhoff.
Read more...Hans Beckhoff receives German Mechanical Engineering Award Beckhoff Automation
News
Hans Beckhoff has received the 2025 German Mechanical Engineering Award. This prestigious award honours entrepreneurs who have set standards in machine and system engineering, driven innovation, and taken on social responsibility.
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SCADA/HMI
The TwinCAT 3 automation software from Beckhoff offers two new function libraries for CNC-specific user interfaces. These were used to create an advanced, intuitive HMI application specifically for CNC purposes and to simulate part machining using real-time data.
Read more...PC-based control technology in additive manufacturing Beckhoff Automation
Editor's Choice Fieldbus & Industrial Networking
As an open control platform, PC-based control supports different engineering approaches, including low-code programming. The machine builder, Additive Industries uses this to create the code for the TwinCAT runtime of its 3D printers.
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