EtherCAT
Realtime Performance for Realtime-Communication!
EtherCAT Master for QNX Neutrino RTOS v.6.3 with 250 µs Bus Cycle Time
Please ask for the availability of a compliant version of the current EtherCAT Draft Standard !
Features of the DACHS EtherCAT- Master:
it's based on a specialized network resource manager and works with QNX6.3
it allows the communication with EtherCAT based IO moduls
update cycles of 250 micro seconds are possible
the bus cycle can be synchronized by and with the application
the configuration of the master is realized with XML-based configurations and device descriptions
individuel mapping of the IO data of the slaves is supported for the definition of application specific IO images.
QNX support with inexpensive Ethernet controllers using the RTL8139 Chip.
-
programming of the DACHS EtherCAT- Master with C/C++, the IEC 61131-3 tool
ISaGRAF for DACHS , or fully event oriented with
DACHSview , an IEC 61131-3
and IEC 61499 based graphical programming tool.
Optimizing bus performance of Ethernet based fieldbusses
Frame transmission time vs. frame size
 |
The frame size defines the maximal frequency of the bus cycle. This is the case for Ethernet based fieldbusses like e.g. EtherCAT, PROFINET, POWERLINK a.s.o.
This fact must be noticed for the design of the size of the slave I/O images and poll sequences. Huge I/O images of the fieldbus slaves lead to low bus update cycles. |
QNX and Neutrino are registered trademarks and PHOTON is a trademark of QNX Software Systems
