I am using a 7i84D in mode 2 as a remote card for a WIRE EDM project. I need to read the voltage to adjust the feed rate. I have a THCAD-300 connected to the spark box voltage and it outputs a square wave signal confirmed by an oscilloscope and reading hal scope reading 7i84 encoder 0 A phase. without a B phase the count will not work. I've tried several commands to change the counter mode to 1 like std encoders to ignore phase B. Is this option not available? Is there another way to achieve this. I have hooked up an mpg wheel and can see a count so the card is working. The card layout is 7i96 with 7i73 pendant on serial and 7i85 on the 7i96 expansion port with the 7i84D on its serial.
Thanks in advance
Yeah, the 7I84 encoder counter is really just meant for MPG usage so does not have the
fancy velocity estimation hardware that a normal encoder has. It would be better to wire
the THCAD to a standard encoder input.
That would require adding a long cable from the spark box to the control box. This something I was trying to avoid. Could I instead measure the voltage via the analog inputs use a voltage divider? Max voltage would be 160 DC.
