Hi, from a previous post I had problems with setting up a 2nd Parrallel port which I sorted but have a minor issue which hopefully someone may help.

I installed the second Parallel Card again with Port address 0xe880
 Output Signal

Output Pin #1 Enabled Port #2 Pin #17

When I Check / Uncheck Active Low relay operates correctly.

Mist Settings
Port 1 address 0x378

Output Pin #3 Enabled Port #1 Pin #17

When Check/Uncheck Active Low relay operates

Fine so far.

If I then go into Diagnostics click Spindle Toggle both relays operate
Click Mist Toggle just mist relay operates

Similarly
If I select in MIDI ,
M3 Both relays operate
M4 Just the spindle relay
M5 Both off
M7 Mist relay operates
M8 None
M9 Mist Off

Also in Spindle setup in Ports and Pins I have spindle control checked and PWM, Relay Control on pin 1 for CW and CCW and mist on 3 and Flood 4, not sure what these pins mean

Update, If I uncheck "Use Spindle Motor Output " the relays are fine but I need spindle motor for PWM control.

So how is it that both relays operate with an M3 or Spindle Toggle, or should they.

Grateful for advise.
Regards John

Post a pic of the spindle tab and the output tab from ports and pins.

Well when I turned on computer and Mach 3 this morning it worked fine, it must has required a restart.

But I enclose copy as requested

Most grateful for help.

Regards John

Try again with attachments

Sorry just noticed that Spindle control not checked, problem returns but if I uncheck PWM control it works fine so its whatever the PWM controls is the problem.

Regards John

Think I solved, When I changed the Spindle setting in Motor Outputs to Port 2 and pin 17, I forgot to change the step and Dir ports on the same line to 2, that solved the problem.

Regards John

You need to know how your machine is setup (wired), to find out why it's doing that.