"Wire your motors to the included DB9 solder cup and secure the backshell connectors. If your motors are rated below 3.5A
you must use a current set resistor across PIN 1 and PIN 5. The resistor is calculated by taking the current in amps and
G540 4-AXIS STEP MOTOR CONTROL REVISION: 8
multiplying by 1000. If your motor is rated at 2.8A per phase you will have to use a 2.8K 5% 1/4W resistor. If your motor is rated
at 3.5A or above you can safely not use a current set resistor; however, your G540 will not go into current standby mode which
will result in increased motor heating."