DCP Series Maintenance Software Test Level 3 - Public Support ...

Error Messages and Fault Isolation
Bit 22 Set by the line module if the line module is off-line to the host when output SDI
execution is attempted. This bit is always set when the line module is off-line,
even during loopback operations. However, in the latter case, the off-line
condition does not terminate the data transfer.
Bit 23 Set by the line module if the output is terminated by a System Reset from the host.
Bit 24 Set by the line module if the output is terminated by a Selective Reset from the
host.
Bit 25 Set by the line module if the output is terminated by an interface disconnect or a
terminate command from the host.
Bit 26 Set by the line module if a data parity error is detected during data transfer from
the host. This action causes a conditional termination.
Bit 27 Set by the line module if no Write command from the host was active when the
input Start Data Transmit was executed. This bit can be set even though the
channel state indicated a Write command was active if the line module received a
Terminate command or ISS with Interface Disconnect before the Start Data
Transmit was executed.
Bit 28 Set by the line module when an input data transfer is terminated either by the CLC
or the host and the line module is holding data it is unable to transfer to the CLC.
Bit 29 Set by the line module if function flag bit 13 (loopback) is set and the line module
is on line, or if function flag bit 13 is not set and the line module is off-line. In the
latter case, the Off-line bit (bit 22) is also set.
Bit 30 Set by the line module if the input is terminated by a Stop sequence from the host.
Bit 31 The CLC sets this bit if a status bit is set and its corresponding chain flag is clear.
This action occurs only after the LM status is passed to the CLC. The line module
does not set this bit.
B–60 7431 8080–202