Robot traction system shutting down

[bob.wolff68]

I gotta say I'm surprised about no PWM cables to the Talons. I may be incorrect here, but I thought the CAN connection was ONLY for CAN/telemetry data and NOT for control. I thought the PWM cables were still required. Can someone validate this?

As for logs and graphs - please do look into it. I think it's wise to do ahead of competition anyway so that you have experience and a mental baseline for what these things should look like. The graphs that are real-time this year are quite informative - more so than prior years for sure. And the logs are chock full of data as well.

bob

[Ether]

Originally Posted by bob.wolff68

I gotta say I'm surprised about no PWM cables to the Talons. I may be incorrect here, but I thought the CAN connection was ONLY for CAN/telemetry data and NOT for control. I thought the PWM cables were still required. Can someone validate this?

TalonSRX Software Reference Manual:
http://crosstheroadelectronics.com/T...e%20Manual.pdf

... or if you're asking if it's legal to use CAN for control, see R59.

[ozrien]

ericomoura, did disabling the motor-safety enable remove the symptom of the motor-safety error in your DS and unexplained motor-stopping? Be sure to clear the log in the DS before each test run.

If the DS is reporting motor safety, then a motor controller is absolutely being set to zero throttle. In fact the mode will read "No Drive" in the roboRIO web-based config Self Test. (see section 19 in Talon SRX software reference manual).

[Phiction]

My team is getting the same error. Our C++ code looks pretty much the exact same as what OP has. We have 4 Can Talons connected through the Can Bus. Using mecanum drive, and Using the Sample Robot. Randomly our drive system won't work. It happens after deploying. Sometimes after we enable & disable. If we switch from teleop to Auto, and when it happens, switching modes will not fix the issue. It also just sometimes randomly stops working. We get input from the joysticks, but since the robot is Enabling saftey for some reason. It will not drive.

We have thought about switching the Talons to PWM, but since we have seen it run flawless before on the CAN bus. We would like to try to solve the issue.

OP if you have solved this issue, can you please post how you fixed it. If anyone has any other information on this issue. Dont hesitate to PM me, or post here. Thanks!