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10.4 TNC Error Messages during Data Transfer
December 2001
The following error messages can occur during data transfer through an
interface:
General error messages:
Interface already assigned
Program incomplete
Ext. input/output not ready
Data transfer erroneous x
Error codes:
Error code Meaning
E
During data transfer with BCC, the <NAK> signal was received
15 times in succession.
A to H
Error code of the receiver module with one of the following
except E
causes:
n
The transfer rate setting of the TNC and peripheral device do
not match.
n
The parity bit is erroneous.
n
Erroneous data frame (e.g.: no stop bit).
n
The receiver module of the interface is defective.
K
During transmission of an error to the TNC, the <1> character
was not transmitted after the <ESC> character.
L
After the error sequence <ESC><1> an incorrect error number
was received (error numbers 0 to 7 are permitted).
N
An expected acknowledgment <ACK> or <NAK> was not
transmitted by a certain time.
M
During data transfer with BCC, the <NAK> signal was
transmitted 15 times in succession.
Codes K and L are shown only during transmission with the standard data
transmission protocol.
TNC Error Messages during Data Transfer
The interface is already transmitting,
or the transmission was not
concluded.
A transmission was broken off or the
file was not correctly concluded (no
END character or END block).
The interface is not connected, or the
peripheral unit is switched off or
defective.
x = error code (see table).
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