Machsupport Forum

Mach Discussion => Mach4 General Discussion => Topic started by: rrc1962 on May 26, 2017, 11:02:24 PM

Title: Ethernet modbus via wifi
Post by: rrc1962 on May 26, 2017, 11:02:24 PM

Has anyone tried connecting to Mach3/4 via modbus using wifi?  Technically, it should work just like wired connection.  Just wondering if there is something about it that would required a wired connection.

Title: Re: Ethernet modbus via wifi
Post by: Steve Stallings on May 27, 2017, 07:17:08 AM

Usng WiFi for a any quasi-real-time device is a bad idea, especially if the WiFi router is serving more than a couple of devices. The connection negotiation protocols can generate unpredictable and sometimes significant delays.

Title: Re: Ethernet modbus via wifi
Post by: rrc1962 on May 27, 2017, 08:20:49 AM

All of that considered though, is it possible?  Or does Ethernet modbus require a wired connection?

Title: Re: Ethernet modbus via wifi
Post by: Steve Stallings on May 27, 2017, 12:36:07 PM

Technically it should work if you get the IP addresses correct. You may have to do
this by configuring the router to "open a port" with a fixed address.