Yes, I'm not much help, the jumpers on the board, no documentation. "A932A" is the board "silk screen" and you can find some stuff if you can wade past all the "gotcha" redirection links to ebay sales pages. Jumpers sometimes do not matter, okay in the default position, but I did smoke a new vfd about twenty years ago and I never forget a mistake.
You have the usb providing 5volt signal power? you have the additional external power connected to the terminals below the relays?? Also, how to provide "pin labels" for Mach3 for the output relays>>>? all the 12 output pins on a parallel port are used? the 4 inputs, there are some questions not answered yet.. (edit after thought).. and there was four bits of bi directional pins that input and output... on a parallel port interface.. I see no "cpu" to read the usb and create logic.. so?? Normally Pin 1 is the "strobe" port pin used for vfd pwm... that is also used for a 0-10/5 volt signal.. but pin 1 was on the ttl step terminal strip.. so???
I bought this board cause it had both connections for sink, or source logic stepper drives, I have both now, and I have some servo drives I bought over ten years ago I plan on using also.
(10:22 edit)... Mach3, OKAY.. use Pin 1 for PWM output, abandon it on the terminal strip.. set it up in Spindle configuration, set it up in Pins Outputs spindle control. THIS board is a either or configuration.. use the pins for 6 axis, or less axis and use those pins for relay control..Removing jumpers disable the terminal strip, If I am wrong, please let me know..
1. High integration；high reliability
2.Absolute voltage isolation. The CNC control board is powered by computer USB port used as digital power that disgned as common cathode and common ancode
which is connecticed to motor dirver’s common port,and another power is DC 12V to DC 24V which is used as analog power.It’s much more safe and stable by isolating the digital power from analog power.
3.Five signal ports are isolated by optocouplers which can be used as limitting position，finding origin points,starting and Estopping. There is no interruption with isolation of optocouplers.
4.Twelve output ports can control six motors simultaneously,and they are also can be used for some ports as you like.Some ports are communally designed for two functions,choice should be made if you
want to use them.
5.Three relays are put on the board that can be programmed in the mach3 software,and there are three leds used for pilot lamp.The relays can be used to control external equipments such as solenoid valve, cooling pump and so on.
6.Programmed analog voltage from zero to ten volt can be set.The analog voltage can control the speed of spindle motor.
7. The CNC control board can control step motor diver with common cathode or common anode.It also can control servo motor with digital signal.
8.The analog power can be from nine volt to thrity volt.