Hi all
I am using mach3 in my scara robot. Now i want to add 2 KMtronic USB relays to control the 2 grippers. Actually it is a single channel relay. I have downloaded the DLL file can controll one by using M3&M5 ( as per their manual ).  How to control the other relay? I tried by M8 & M9 . but i couldn't. Please help me in this.

And also i want the mach 3 to send a signal to another pc ( mach 3)  to control these two relays separately. Is it possible? If yes how?

Thanks a lot in advance

Write a macro for each relay, and call them from either buttons or M codes.
http://info.kmtronic.com/mach3-and-kmtronic-usb-relays.html