Gallagher Apollo 3000, Manual, Page: 73 / 81

27.
Comms Channel B errors
70 Channel B Receiver Parity Error
Error 70 indicates a parity error was detected in one or more of the received message bytes.
71 Channel B Receiver Framing Error
A character was received for which no stop bit was detected.
72 Channel B Receiver Break Error
A steady low (space) signal has appeared at a receiver, indicating a break condition at the
transmitting end. The formal definition is that an all zero character with no stop bit has been
received.
73 Channel B Receiver Overrun Error
This indicates an overflow of the 3 byte FIFO buffer for a receiving channel. This means that the
processor is not reading the incoming data fast enough to prevent overwriting this stack.
74 Channel B Receiver Checksum Error
The message received had a checksum error.
75 Channel B Receiver Data Error
This indicates that the polling message received from the Input Processor is an invalid type (or
that the comms line has been corrupted, in which case a checksum error will probably also occur).
76 Channel B Receiver Overflow Error
The message received was too long for the buffer. This may happen if no EOM character or
sequence is detected.
77 Channel B Transmitter Overflow Error
The transmitter has tried to send a message which is too long. This means that the transmit buffer's
last position was reached, but an EOM character or sequence was not present.
78 Channel B Receive Timeout Error
This indicates that the receiver is expecting a character from the Input Processor, but has not
received one for more than 1 second.
79 Channel B Transmit Timeout Error
This indicates that the transmitter is attempting to send a message to the Input Processor, but there
has been a delay of greater than 1 second since the last character was transmitted.