I have an application that uses 2 x LC6 joysticks for driving a safety circuit. Primary signals are fed into MC41FS and secondary comparison channel into XC21. I used XC21 as there are not enough VIN into MC41 - 8 x 2 = 16VIN (we have space restrictions preventing bigger or multiple MC4 module).
Modules share the same power supply and are located next to each other, but power supply to joystick (VREF+ & -ve) comes from MC41 module. Secondary comparison VIN into XC21 has no VREF-ve. To prevent fluctuations on VIN on XC21 do I link VREF- between MC41 and XC21?
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