Brother TC-211

how do I get the 22 volts to pins 14 to 16 off the 7i77 board??

22V simply means that 15 is not shorted to pin 16 (GND) and that is its open

(I assume you measured +22 V from 15 to 16)

You should measure the same with the 7i77 connected since we are not using
pin 15

I would also measure between CN9 pins 19 and 2 (Torque reference)

pin 14 to 16 and pin 15 to 16 are both 22 volts

pin 19 to pin 2 showed no voltage

about 6 volts constant between 14 and 15

I get these readings weather the servo is activated or not.

Any ideas would be great

So you are saying that when the Brother controller is connected and the drives are running,
CN8 pin 14 measures +22V and CN8 pin 15 measures +22V both relative to CN8 pin 16?

Is there more information on the start input in the drive manual? perhaps its a momentary low to start

the voltage is constant even if the motors are not on

That doesn't answer my question

What is the voltage on CN8 pin 14 and pin 15 relative to CN8 pin 16 when the drives are running