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Posital POWERLINK Encoders for Cost-Effective Migration

With redesigned POWERLINK rotary encoders based on an FPGA design, POSITAL offers users a cost-efficient way to perform migration from CANopen to the Ethernet-based successor standard. Mounting depth of the new generation of encoders was greatly reduced. All outer dimensions are now identical to those of the field bus models. They allow cycle times as short as 250 ?s.
In addition to the classic polling mode, during which the master or managing node polls each Slave or controlled node, the “Poll Response Chaining” and “Multiplexing” modes are also supported. This extension of operation modes makes it more efficient for customers to implement their own time-critical applications and raise system bandwidth using the new interface design.
Rugged M12 connectors certified to protection class IP67 bring another advantage for connectivity. Preassembled custom cables reduce installation work while helping to avoid installation errors. The connection hood is equipped with two rotary switches. While it was detachable in previous versions, it is integrated in the new encoders.
Two hex-coded address switches accessible from the outside are also rated IP67 and allow setting of the host ID within the net ID in an easy way. This greatly reduces the efforts required by network administrators for maintenance and integration. With an integrated hub and thanks to extremely short propagation delays, lengthy line structures can be implemented as well. Diagnostic LEDs show traffic intensity and link conditions at each port connection as well as the condition of the device from the network-s point of view.
About EPSG
The Ethernet POWERLINK Standardization Group (EPSG) is an independent organization founded in 2003 by leading companies from the fields of motion control and automation technology. Its aims are the standardization and further development of the POWERLINK protocol first introduced by B&R in 2001. This high-performance real-time communication system is an advanced protocol based on the IEEE 802.3 Ethernet standard designed to ensure real-time data transfer in the microsecond range. The EPSG cooperates with leading standardization organizations such as CAN in Automation (CiA) and the IEC. Anton Meindl, business manager of Controls at B&R, is the organization-s CEO.