Start up notes:
Before applying power double check the wiring, especially the power and ground. A mistake with those can damage your equipment. Mixed up signal wiring will keep the system from operating correctly but is less likely to damage anything.
Set up MACH according to the ST-V2 instruction.
Note: The wiring diagram connects the breakout board and stepper drivers as common anode.
Disconnect the 24V from the TB6600s. Disconnect the 5V wire from the 5V supply to the BOB.
Power on the system and check that the wire from the 5V supply measures +5V to the BOB PC GND.
Turn off power and connect the 5V supply.
Turn on power and use the MACH3 diagnostics to verify the limit switches work. The E-STOP input should trip when the E-STOP switch is pushed. Power off when done testing.
Connect the 24V to one TB6600. Set its switches to
Microstep = 1 S1 = on, S2 = on, S3 = off
Current = 1.5 S4 = on, S5 = on, S6 = off
Power on and immediately measure the voltage on the motor windings.
One winding will have 4.5 volts from the - to the + terminal. The meter may show either polarity. (4.5V = 1.5A times 3 ohms, the total winding resistance.)
This test shows the switches are set correctly. It’s sometimes hard to be sure which switch position is off or on.
Turn power off and connect the 24V to the other TB6600s. Set the switches as shown on the wiring diagram.