Bus Failure Messages
- Short-To-Battery
Either or both of the bus wires are shorted to the battery potential.
- Short-To-5 Volts
Either or both of the bus wires are shorted to a 5-volt potential.
- Short-To-Ground
Either or both of the bus wires are shorted to the ground.
- BUS (+) & BUS (-) Shorted Together
The two bus wires are shorted together.
- No Termination
The bus system has lost connection with all of its terminators.
- Bus Bias Level Too Low
Either or both of the bus wire potentials are significantly below their normal 2.5 volts.
- Bus Bias Level Too High
Either or both of the bus wire potentials are significantly above their normal 2.5 volts.
- No BUS Bias
The bus system has lost connection with all modules that provide bias.
- Bus (+) Open
The bus (+) wire has lost connection with termination and/or bias.
- Bus (-) Open
The bus (-) wire has lost connection with termination and/or bias.
- Not Receiving BUS Messages Correctly
The DRBIII(R) cannot communicate over the bus and does not know why.