| Update on the issue with serial interfacing for the TV 551 turbo pump: Tried a new test today, to see if the commands being sent to the controller were actually getting through at all, since we know that no response is getting back to us. To test this, I sent the start/stop command for the pump, disconnected the serial connection and instead connected the controller to spica so I could run the manufacturer's software, and used the manufacturer's sotware to check the pump status manually. After trying a few variations of this test, during which the pump status did not change at all from 'normal' (meaning the stop command being sent was not actually received), we've concluded that the commands being sent to the pump with the serial comms code are not being received. Further troubleshooting needed. |