Compressor

[Alan Anderson]

Originally Posted by DBaleta

In the begin vi the 0 and 1 corresponds with the channel in the Pneumatic Control Module that the double solenoids are using. Or at least that's what I think.

That number corresponds to the CAN ID of the PCM itself. It defaults to zero, and should remain zero unless you're adding a second PCM to the system.

The enumerated "Solenoid 0", "Solenoid 1", etc. define which outputs of the PCM are connected to the solenoids.

If your PCM is blinking red, then you need to look at your CAN wiring and make sure it is correct. The yellow/green CAN terminals on the roboRIO should be wired to one pair of terminals on the PCM, and the other pair of PCM terminals should be wired to the CAN terminals on the Power Distribution Panel.

[DBaleta]

Originally Posted by Alan Anderson

That number corresponds to the CAN ID of the PCM itself. It defaults to zero, and should remain zero unless you're adding a second PCM to the system.

The enumerated "Solenoid 0", "Solenoid 1", etc. define which outputs of the PCM are connected to the solenoids.

If your PCM is blinking red, then you need to look at your CAN wiring and make sure it is correct. The yellow/green CAN terminals on the roboRIO should be wired to one pair of terminals on the PCM, and the other pair of PCM terminals should be wired to the CAN terminals on the Power Distribution Panel.

We rewired our CAN wires (They were wired incorrectly). Now the PCM is blinking green. We have yet to test the program though.

[DBaleta]

We ran into a problem where the buttons do not retract the pistons. Did i program the buttons wrong?

[Mark McLeod]

If some of the LEDs next to the solenoid ports 0, 1, 2, 3 light but do not change, then there is still something wrong with the code.
Want to post the latest?

[DBaleta]

Originally Posted by Mark McLeod

If some of the LEDs next to the solenoid ports 0, 1, 2, 3 light but do not change, then there is still something wrong with the code.
Want to post the latest?

There are no LEDs next to the solenoid ports as far as I can tell.

[Mark McLeod]

The PCM solenoid LEDs are easy to miss if they are off, and hard to miss if they are on. Here is what they look like:


If none of the LEDs are on then your commands are not getting to the PCM (or it's Disabled).
Did you go back with a web browser and confirm the CAN ID used by the PCM =0?

[DBaleta]

Originally Posted by Mark McLeod

The PCM solenoid LEDs are easy to miss if they are off, and hard to miss if they are on. Here is what they look like:


If none of the LEDs are on then your commands are not getting to the PCM (or it's Disabled).
Did you go back with a web browser and confirm the CAN ID used by the PCM =0?

The CAN ID is 0 and none of the LEDs are on. The Light Device LED box is unchecked. Could that be why?

Is there an example of how to program the buttons in Labview that I could see?

[Mark McLeod]

There are some examples here.

The Light Device LED is just a way to make the PCM flash so you can confirm which one it is if you have multiple PCMs.
You can test it by checking it then clicking Save. The PCM will immediately blink rapidly for a second or two.

[DBaleta]

Originally Posted by Mark McLeod

There are some examples here.

The Light Device LED is just a way to make the PCM flash so you can confirm which one it is if you have multiple PCMs.
You can test it by checking it then clicking Save. The PCM will immediately blink rapidly for a second or two.

We reworked the programming and some LEDs do turn on. However only Solenoid B seems to work. Solenoid A automatically expands the piston and refuses to retract. Solenoid B (used for our noodle system) extends and retracts the piston correctly yet Solenoid A (used for our lift system) extends the piston without the pressing a button and refuses to retract.

[Alan Anderson]

Your Teleop code doesn't show where the Buttons array is coming from. It almost looks like there are two different arrays coming in from the top left, each being converted for some reason to a cluster, then a member of each cluster is being chosen independently to select the solenoid state.

Give us some more context so we can see what you're trying to control the solenoids with.

[DBaleta]

Originally Posted by Alan Anderson

Your Teleop code doesn't show where the Buttons array is coming from. It almost looks like there are two different arrays coming in from the top left, each being converted for some reason to a cluster, then a member of each cluster is being chosen independently to select the solenoid state.

Give us some more context so we can see what you're trying to control the solenoids with.

The reason why we converted them to a cluster was because that was what we were used to the previous years. We changed them back into arrays.

Noodle Solenoid works (Previously labeled Solenoid B). Lift Solenoid doesn't (Previously labeled Solenoid A).

[DBaleta]

We sorted everything out and now everything runs. Our team wants to reprogram the solenoids so that the pistons stop expanding or retracting once the button is let go. As of right now if you push a button, the piston will either fully extend or fully retract. No in between.