pneumatic programming

[Tom Bottiglieri]

Originally Posted by Greg Marra

All that flipping the relay fwd and backward does is reverse the polarity of the electricity which, in this case, does nothing. You want to simply turn OFF the signal by sending two zeros.

At least, that's the way our pneumatics code works.

You are using a single acting solenoid then. This type of solenoid could be compared to a pushbutton switch, with an 'NC' and 'NO' output. It will stay closed until you apply power, and close again once power is lost.

A double (or latching) solenoid only requires a momentary flow of electricity to either side, and will switch to the side with the applied current. This could be comapred to a toggle switch.

If Stephen is using a single solenoid, it would only open when either button is pushed (per code posted.)