What does a RS-485 time out mean on a Sigma 950?
What RS-485 time out means on a Sigma 950.
- When the black bar at the bottom of the Display Screen, or the event log displays RS-485 time out, the unit is not get a reading returned within a specified time.
- Main cause for this is the CPU board not communicating with the Ultrasonic board.
- To troubleshoot: Restart the meter, make sure the sensor connection is correct and that the meter is programmed correctly. If after resetting the unit, if the error does not go away the unit will need to be sent into service for repair.