Questions tagged [ethercat]

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EVB-LAN9252-SPI not responding to SPI

I just recently bought an LAN9252 evaluation board from Microchip. I have communicated with the board over EtherCAT but couldn't do the same with the SPI. I have checked the PDI register showing ...
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1answer
157 views

Is hard real time possible with Ethernet technology? [closed]

If I use EtherCAT to control a motor -- say I use RTnet + SOEM to control a servo drive using EtherCAT connectivity -- and the servo drive both controls and reads sensor value, than: is it necessary ...
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2answers
850 views

Connection to ground for a Cat5e Shielded outdoor rated cable

My ISP installed the cable modem in my entertainment room. I am trying to have internet also in my STUDIO with an access point to broadcast a second WIFI from there to other parts of the house. (My ...
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1answer
46 views

How can I set up a chained DAQ system with small off the shelve boards? [closed]

I'm building an exoskeleton in a student team and we're having some trouble finding the right prototyping system for our electronics system. All of the shelve systems are either too slow or too big. ...
1
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1answer
790 views

Microcontroller as a slave

I want to set up an EtherCAT Network, First I have installed IgH EtherCAT Master in my PC (Ubuntu 14.04) and RTAI 4.1 as RTOS Can I use microcontroller as a slave without any additional devices ...
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1answer
608 views

High speed data from microcontrollers to pc using daisy chain

I have STM32F4 discovery boards. I have 30 such boards supporting maximum data of 128Mbps. The max data at any instance in complete system would be 300Mbps.I need to pick this data and send it to PC. ...
10
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2answers
4k views

EMI Filtering on LVDS lines

This question is slightly related to: What's radiating on my PCB? These are Beckhoff's EtherCAT industrial IO modules. Each module is connected to its neighbours by 100mbps LVDS. Each module contains ...
7
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2answers
36k views

Calculating a simple CRC

In the datasheet for the ET1200 EtherCAT ASIC (page 94), I am told that I need to calculate a CRC of some of the 16-bit data in its EEPROM. The only description of this CRC is: Low byte [of word 7] ...
2
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2answers
1k views

Discrete Ethernet magnetics

Rather than using an Ethernet magnetics component, is it possible / reasonable to simply use individual isolating transformers? Inside the magnetics component, it's clearly made up of individual ...