Not Receiving Crank Signal or RPM Reading

[mdugger]

Good Day
I currently purchased a microsquirt controller and am having a issue with not getting a crank signal or RPM reading.
I am using Tunerstudio MS V1.006 and my ECU Definition is MS 11 Rev.3.77000.
The ignition Tab set as follows:
Ignition Input Capture: Rising Edge
Cranking Trigger: Trigger Rise
Coil Changing Scheme: Standard Coil Charge
Spark Output: Going High(Inverted)

I am using a GM 7pin HEI module. the wiring from the HEI module is wired to the microsquirt a follows:
Pin 30 (OPTOIN +) to Pin R of the HEI Module
Pin 31 (OPTOIN -) to the distributor ground
Pin 12 (Ignition Output #1) to Pin E of the HEI module
When I crank the engine I get no cranking signal or rpm reading on the Tunerstudio
pierced OPIOIN + wire and read with a meter and saw what looks like a trigger but no crank signal
Removed spark plug wire and verified that I had spark while cranking
Replaced spark plug wire
Disconnected OPTOIN + from 7 Pin hei module and OPTOIN - from ground
Connected OPTOIN + to Tach wire from coil and connected OPTOIN - to a 12vdc source.
cranked the engine over again. Still no crank indication or RPM signal
What would be the next steps?
Thanks
Mike

[Matt Cramer]

You may not be getting enough current - try rewiring it so you have OPTOIN+ to VREF and OPTOIN- to the RPM signal. You need to change ignition input capture to Falling Edge with this wiring change.

[mdugger]

Okay, so with that setup am I taking the tach signal from the module pin R or from the coil's tach terminal?

With the HEI setups, is there ever a reason to change the settings of Input Capture, Coil Charging or Spark Output?

[Matt Cramer]

Use the R pin - that hasn't changed.

Input Capture may change depending on how RPM is wired up. The other options do not change.

[mdugger]

Hi Matt
Tried what you suggested and still have no rpm or crank. Any other suggestions? I wired to my original set up and am enclosing a screen shot of my ignition settings. One more question, When does the diagnostic tab become active , after the car starts?
Thanks,
Mike

[Matt Cramer]

Turn dual / multispark options off.

[mdugger]

How do I turn them off? I did not see this as an option

[Matt Cramer]

Top center of your settings picture...

[mdugger]

Thanks Matt, guess I was having a senior moment. Anyway, finally got spark and RPM reading. I wired it as you described above (optoin+ to vref and optoin- to pin R)
However, when I crank the engine, I get an RPM reading (225 rpm) but the mstunner application says not cranking and the injectors do not fire.( Verified with a node ) I performed a injector test and all functioned correctly. Any good suggestions on what to check next?
Thanks,
Mike

[Matt Cramer]

Please post a copy of your MSQ (not a screen shot) and a data log of an attempted start.