Correct pin outs for MKS Gen 1.4 with dual z motors and end stops and BL Touch

I have a dual z motor printer with dual z limit switches. I'm now trying to add a BL touch and am trying to figure out the configuration.

The limit switch for left z lead screw is connected to the X+ pin and the right limit switch is connected to the Z- pin.

Every BLTouch page I've seen connects it to the Z- pin. I think I can make this work by connecting the BLTouch to the Z+ pin by changing this value - I'm just not sure what the new value should be.

#define Z_MIN_PROBE_PIN 32 // Pin 32 is the RAMPS default

The pin_MKS_BASE_14.h file lists these pins, for Z+ do I use 19 or 45?

Limit Switches

============

| 2 | GND | X+ ( 2) PE4 ** Pin6 ** PWM2

|----|-----|

| 3 | GND | X- ( 3) PE5 ** Pin7 ** PWM3

|----|-----|

| 15 | GND | Y+ (15) PJ0 ** Pin63 ** USART3_RX

|----|-----|

| 14 | GND | Y- (14) PJ1 ** Pin64 ** USART3_TX

|----|-----|

| 19 | GND | Z+ (19) PD2 ** Pin45 ** USART1_RX

|----|-----|

| 18 | GND | Z- (18) PD3 ** Pin46 ** USART1_TX

============

Edited 1 time(s). Last edit at 02/20/2021 04:52PM by Dust.

So use 19. Also, the comment says 32 is the default, but I don't see 32 on the drawing. What is 32?

Edited 1 time(s). Last edit at 02/21/2021 11:48AM by sportsracer.

There is a undocumented port on that diagram. USB_MSD

pin D32 is on that port

Thank you.