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General Mach Discussion / Re: UC100 interference - Ethernet better?
« on: January 18, 2014, 05:17:23 AM »
USB is definitely more prone to noise than Ethernet. Ethernet also does not have the same issues that USB can have with windows, for example windows can occasionally drop a USB connection. Ethernet also has the advantage that it is isolated from the computer by an isolation transformer in the port.
I have used 5 different Ethernet controllers, the Ethernet Smoothstepper, the Scorpion, the CSMIO/IP-M, CSMIO-IP-S and the CSMIO/IP-A and have never had a noise problem with them. However I tend to use 24v I/O and also any low voltage signal wires such as encoders or step/dir I have differential and also shielded and properly grounded.
I have also used the USB Smoothstepper on a few machines and only one did I suffer from occasional noise issues, this was only when I hit the E-Stop which dropped out contactors and even though my wiring was shielded and the contactors were snubbed I still had this issue, removing a cap and resistor on the Smoothstepper to isolate the ground cured that for me.
Hood
I have used 5 different Ethernet controllers, the Ethernet Smoothstepper, the Scorpion, the CSMIO/IP-M, CSMIO-IP-S and the CSMIO/IP-A and have never had a noise problem with them. However I tend to use 24v I/O and also any low voltage signal wires such as encoders or step/dir I have differential and also shielded and properly grounded.
I have also used the USB Smoothstepper on a few machines and only one did I suffer from occasional noise issues, this was only when I hit the E-Stop which dropped out contactors and even though my wiring was shielded and the contactors were snubbed I still had this issue, removing a cap and resistor on the Smoothstepper to isolate the ground cured that for me.
Hood