Hello! I need to control a small machine with 3 Copley Controls Junus drives and 5V incremental encoders on the motors. I would like to keep the cost as low as possible. Luckily Junus has PWM inputs and I don't need analog outputs. I am going to buy RPi 4 for this project. 1. Anyone has experience with RPi 4 and 7i90HD via SPI link? When I tried it with RPi 3, the link was really unstable. 2. Assuming the first reply negative and I use 7i92: do I have to buy 7i85 or 7i75 is enough protection for FPGA chip? Or is it possible to connect encoder outputs and PWM inputs (74HC14) directly to 7i92? 3. Any other option?
Thanks and best regards, Andrew _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
