SpinX1A output to DuraPulse GS 20 Input

 

How do I connect the output of the SpinX1A (cw+, cw-) to the digital in of the VFD (FWD, DCM). See attachment of the GS20 input schematic?  I tried hooking the CW+ of the SpinX1A to the FWD of the GS20, and the CW- to the DCM; but it doesn't seem to work.

  

That  (SPINX1 CW+ --> FWD, SPINX1 CW- --> DCM)
should work (when the switch is set for NPN) ,
but try with a direct connection (FWD to DCM)  to verify that
the drive is setup properly.

Note that SPINX1 /ENA must be asserted (low)
for either CW or CCW to be enabled