Emcoturn 120 lathe retrofit

You can do this all by hand

(unplug the VFD for safety)

im not getting any signal on the HAL pin. I would like to test the encoder but Im not an EE, the encoder is a BEI H25D-SS-1800-ABZ-7406R-LED-SM16-S. Since its an older one Im having trouble decoding the serial number. from what I have found it is

H25 model
D square flange
SS shaft seal
1800 counts per rev
ABZ a, b and index
7406 (R) Open Collector: Current sink of 40 mA max. Current sourced by
external pull-up resistor. When called out as 7406R, pull-ups are
internal and sized at approximately 100 ohms/volt and current
sink is limited to 30 mA. Output can be pulled up to voltage other
than supply voltage (30 V max) when the 7406 is used without
internal pull-ups. Voltage regulator can be used to allow supply
voltage up to 28 V (called out as a special feature). Supply current
is 100 mA typical, 120 mA with internal pull-ups. The 7406R is
replaced by the 4469 or the 7272 in system upgrades, or with
the 7273 if external pull-ups are used.

LED cant find this
SM16 connector
S special order but dont know what it is

Can I hook up power and ground and probe the A,B and Z outputs?

I have this connected like this

I had it connected completely wrong. does this look correct

I think I am missing these HAL components. any thoughts on the HAL pin id for the 7i76e? This example from the docs here has parallel port pins

is it these 3?

No, nothing is missing ( you do not need the encoder component, that's only for software encoders )

First, it looks like this is a single ended encoder with index so the 7I76E encoder must first
be jumpered for TTL=single ended mode.

In single ended mode all inverted inputs must be left unconnected (7I76E pins 8,10,14 left open)

I think I understand if you mean pins 8, 11, and 14 (those are the (-))

section from 7i76e manual

ENCODER INPUT MODE
The 7I76Es high speed encoder input can be programmed for differential or single
ended mode operation. W10, W11 and W13 set the encoder input mode. When
W10,W11,and W13 are in the right hand position, the encoder input is mode is differential.
When W10,W11, and W13 are in the left hand position, the encoder input mode is single
ended or "TTL". Note that W10 controls the input mode for the ‘A’ signal, W11 controls the
input mode for the ‘B’ signal and W13 controls the input mode for the index signal.

Yes sorry 8,11,14

PCW wrote:

Yes sorry 8,11,14

thanx, you can see above how really clueless I am on this