Troubleshooting Terminal, Printer and Serial Device Connections - Edition 4 (32022-90030)

Chapter 4 43
TermDSM Commands
DI[AG]
DI[AG]
Determines if the DTC hardware or the connections from a DTC to its
devices are functioning properly.
Security level: 1 for DTC selftest; 2 for remaining diagnostic functions.
Syntax
DI[AG]
Description
After the DIAG command is entered, the following prompt is printed on
the terminal:
(diagnostics)
SElftest # (DTC Selftest)
PRint #,#,# (Print to specified port)
Internal #,#,# (Internal loopback on specified port)
EXTernal #,#,# (Loopback through hood on specified port)
Terminal #,#,# (Write and read to terminal on that port)
XInternal#,#, (Internal loopback on specified SNP card)
XExternal#,# (Loopback through hood on specified SNP card)
XNetwork #,#,# (Loopback on the highest and lowest VC)
(carriage return to exit) ?
These are the subcommands that can then be entered. The following
pages describe each of these options.
If you press [Return] instead of one of the subcommands, you will be
returned to the major prompt and can then enter another TermDSM
command.
[CTRL]-Y can be used during execution of any of the above
subcommands to stop the diagnostic looping. However, the current loop
will always complete before the
[CTRL]-Y takes effect. In the case of the
DTC selftest, this can take several minutes.