Hi John!
Thanks for the willingness.
I agree with you. But there's no harm for the user if he need to do some adjustments to the machine and it turns to RUN mode accidentally.
That STOP mode, will be activated at the same time that a mechanical relay will cut off the power of a pump and a solenoid valve, once the user opens one door.
The only thing that could hurt him once the door is open, is that pump and the liquid that comes trough the solenoid valve (NC), and it'll be power off by software and hardware..
I need to stop the process as well, in order to keep it running as before (timers and outputs), after the user makes the changes to the pump.
Regards,
Gonzalo