Synonyms for sercos or Related words with sercos

profinet              powerlink              canopen              mechatrolink              ethercat              spacewire              interbus              rapidio              unipro              xfi              rapidlo              versamodule              sgpio              fastbus              devicenet              futurebus              gvif              compactpci              ttcan              etherlink              mvip              profibus              climatetalk              euromap              ttethernet              lonworks              pmbus              canbus              basetx              picmg              byteflight              spacefibre              slimbus              myrinet              infinband              digrf              vmebus              gbaset              caui              fieldbuses              ncits              gige              tokenring              ntcip              multibus              mdio              seriplex              bisync              safebus              xenpak             



Examples of "sercos"
Sercos III is the third generation of the Sercos interface, a globally standardized open digital interface for the communication between industrial controls, motion devices, input/output devices (I/O), and Standard Ethernet nodes. Sercos III merges the hard real-time aspects of the Sercos interface with Ethernet. It is based upon and conforms to the Ethernet standard (IEEE 802.3 & ISO/IEC 8802-3). Work began on Sercos III in 2003, with vendors releasing first products supporting it in 2005. In addition to the standard Sercos features cited under the Sercos interface general description, Sercos III also provides:
Commercially available UCC Switches block the transmission of Sercos III broadcast telegrams out their non-Sercos III port(s), to prevent flooding of non-Sercos III networks with Sercos III cyclic data.
Sercos III merges the hard-real-time aspects of Sercos with the Ethernet standard.
Sercos is supported globally by Sercos International e.V. (SI) in Germany. Regional support is provided by Sercos North America(USA), Sercos Japan and Sercos China. These organizations provide a forum for the continued development of the standard, as well as user support.
UC frames may only enter a Sercos III network through a Sercos III-compliant port. This can be achieved two different ways. One is to employ the unused Sercos III port at the end of a Sercos III network configured in line topology, as shown to the right.
Driver software is used to connect a controller to the device logic. A number of basic Sercos drivers are available as open source software from sourceforge.net. These include a common Sercos Master API library, Sercos Internet Protocol Services software and a Sercos UCC Ethernet network driver.
A pre-certified CIP Safety on Sercos protocol software is available to equip Sercos and EtherNet/IP devices with the appropriate safe logic up to SIL3.
SERCOS interface™ is a powerful real-time communication interface, ideal for demanding motion control applications. The SERCOS profile for servo drives and communication technology are standardized in IEC 61800-7. This standard also contains the mapping of the SERCOS servo drive profile to EtherCAT (IEC 61800-7-304).
Sercos Energy reduces energy consumption in three areas:
Sercos III is designed in such a way that no additional network infrastructure (standard Ethernet switches, Hubs, etc.) is required to operate. In fact, no additional standard Ethernet (non-Sercos III capable) components may be placed within a Sercos III network, as their presence will adversely affect the timing and synchronization of the network.
The time between the end of the transmission of all Sercos III Real Time (RT) cyclic telegrams, and the beginning of the next communication cycle is defined as the “Sercos III Unified Communication Channel” (UC Channel). During this time period, the Sercos network is opened to allow transmission of Ethernet-compliant frames for other services and protocols. For example:
An important aspect of an open, interoperable communications system is rigorous testing of products for adherence to the standard and their ability to operate in networks of products from multiple vendors. Sercos International e.V. supports a Conformance Laboratory at the University of Stuttgart's Institute for Control Engineering of Machine Tools and Manufacturing Units (ISW). Products successfully passing conformance testing may display a mark indicating they are conformance tested. Conformance-tested Sercos I and II products are publicized in an index of certified products, Sercos I and II. Conformance-tested Sercos III products are publicized in a index of certified products, Sercos III.
To achieve true hard real time characteristics, Sercos III, like Sercos I & II, uses a form of synchronization that depends upon a synchronization “mark” issued by the master control at exact equidistant time intervals. All nodes in a Sercos network use this telegram to synchronize all activities in the node. To account for variations in network components, delays are measured in the node-to-node transmissions during phase-up (initialization) of a Sercos network, and those values compensated for during normal operation. Unlike Sercos I & II, where a separate Master Sync Telegram, or MST is used for this purpose, Sercos III includes the MST in the first MDT transmitted. No separate telegram is issued. The time between two MSTs is exactly equal to the designated Sercos cycle time, tScyc.
Every Sercos III-compliant node must support the passing of UC frames through its Sercos III interface. Whether a Sercos III node actively makes use of the UC feature is determined by the feature set of the product. If, for example, the device has an embedded web server, it could make available its IP address for access by other devices.
CIP Safety on Sercos provides for safe data transmission over Sercos III up to SIL 3 (Safety Integrity Level). No additional safety bus is required, as the safety information is sent in addition to the standard data on the Sercos network.
Sercos III does not define whether a port should operate in cut-through switching or store-and-forward mode when handling UC frames. There are Sercos III products currently on the market that support both modes. Likewise, Sercos III does not define whether a port should intelligently process UC telegrams, such as learn the network topology.
A Sercos master and an EtherNet/IP scanner are required to implement a mixed Sercos and EtherNet/IP network infrastructure. These functionalities can be combined into one device, a dual stack master.
An open source Sercos III Softmaster driver is available. It emulates the Sercos functions, so that a standard Ethernet controller can be used instead of FPGA or ASIC hardware.
The network remains available to UCC traffic until the next cycle begins, at which time the Sercos III nodes close the nodes to UCC traffic again. This is an important distinction. Sercos is purposely designed to provide open access at all ports for other protocols between cyclic real time messages. No tunneling is required. This provides the advantage that any Sercos III node is available, whether Sercos III is in cyclic mode or not, to use other protocols, such as TCP/IP, without any additional hardware to process tunneling. Sercos nodes are specified to provide a store and forward method of buffering non-Sercos messages should they be received at a node while cyclic communication is active.
Keep in mind that since the Ethernet destination field in all Sercos III telegrams is the broadcast address of 0xFFFF FFFF FFFF (all 1s), all telegrams issued from this open port will be seen by other devices as broadcast telegrams. This behavior is by design, and cannot be disabled. To avoid taxing networks attached to an open Sercos port, an IP-Switch can be used, or alternately a managed Ethernet switch programmed to block broadcast telegrams received from the Sercos port can be used. Starting with Sercos III specification version 1.3.1 the connection of industrial Ethernet devices is supported where devices work with 20 ms cycle time in communication phase 0 (CP 0).