Hi Andy >> Do you have any idea what might be a practical solution >> to integrate the forth axis via some kind of radio link, >> WLAN at best? > > Not immediately. How are you getting power to that actuator?
Well the end-effector is suspended from three steel cables (controlled by the other three axis). I cant hang any additional wires so all i have are three lines, GND, Vcc and an interlock/emergency shutdown. > And if you can get power there, why not hard-wired control signals? Well in theory I could work something our to use the third wire to run a bidirectional serial buss on it, but I have the feeling this will take much longer than trying to use some standard technologies like WLAN or Bluetooth. > The Mesa smart-serial protocol travels down CAT5 cable, it is just > possible that a wireless repeater exists that could pass-through that > data. Hmm a dedicated RS485 wireless link. I'll look for that. > I guess that any wireless protocol that can support 2.5Mbit > serial could be pressed into service for the job. 2.5 Mbit? Is it relay necessary to be that fast. Cant I run this at a view hundred kbit? The forth axis does move only very slowly an if its slightly out of sync its OK, too. In fact I could live with a way to set the speed of the motor by a g-code command (custom M word?). So there is no real need for interpolation between all for axes. Thank for you help. Flo ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
