Re: What to use? EtherCAT or Ethernet Powerlink with CANopen protocol
Steinhoff <[email protected]>
| Newsgroups | gmane.comp.hardware.bus.can |
|---|---|
| Message-ID | <[email protected]> |
Kees Zagers wrote: > Hello all, > > I like such discussions: > > A materialflow system running at maybe 1 m/s (3.6 km/h) Fast sorting systems are running often with ~10m/s ... --Armin > cannot use CAN and a car on the German "Autobahn" driving over 200 km/h still CAN!!! > > It is all a matter of system design in my opinion. The industrial control systems are based on a PLC with a cycle time of 10 or even 1 ms and all communication has to take place within this period. Use controllers which are more intelligent and use the network for supervising and event control and a lot of the traditional networks still handle all the communication. > > Twenty years ago Honeywell introduced the CAN-based Smart Distributed System (SDS). Simple on/off sensors could be programmed with a batch counter. Don't count every bottle, but after 24 counts the system should place the next box. The PLC does not count; the sensor does. This is called "Thinking out of the box"? > > Kees Zagers > > ----- Original Message ----- > From: "Steinhoff" <[email protected]> > Cc: "John Dammeyer" <[email protected]>; "'CANLIST'" <[email protected]> > Sent: Wednesday, December 12, 2012 2:50 PM > Subject: Re: [CANLIST] What to use? EtherCAT or Ethernet Powerlink with CANopen protocol > > >> John Dammeyer wrote: >>> [ clip] >>> >>> I think the high speed large packet size control networks are a minority. >> Have a look just to the segment of materialflow systems ... most of >> these systems running with a bus cycle lower than 10ms. >> Sorter applications are running with a speed down to 1ms. >> >> And there are a lot of materialflow systems out there ... >> >> --Armin >> >>> John Dammeyer >>> >>> >>> "ELS! The Solution" >>> Automation Artisans Inc. >>> http://www.autoartisans.com/ELS/ >>> Ph. 1 250 544 4950 >>> >>> >>> >> -- >> Archives and useful links: http://groups.yahoo.com/group/CANbus >> Subscribe and unsubscribe at www.vector.com/canlist/ >> Report any problems to <[email protected]> > ·!Š÷¬jwn±çî–X§’Èm¶Ÿÿ‚º.¦Ìš†Š ¢o஋©ü > në¹» ®&ÞjwnžË›±Êâmæà /yËhÊ&ýƧ–+-ý©¢»ZŸ*k¡¹^šËhq©åŠËhÂw«½ç-¢¸§~Šæjؤde== -- Archives and useful links: http://groups.yahoo.com/group/CANbus Subscribe and unsubscribe at www.vector.com/canlist/ Report any problems to <[email protected]>