Date Code 20001006 Serial Port Communications and Commands 10-37
SEL-351 Instruction Manual
LOO Command (Loop Back - Available in Firmware Versions 1, 2, 3, and 4)
The LOO (LOOP) command is used for testing the MIRRORED BITS communications channel. For
more information on MIRRORED BITS, see Appendix I: MIRRORED BITS. With the transmitter of
the communications channel physically looped back to the receiver, the MIRRORED BITS addressing
will be wrong and ROK will be de-asserted. The LOO command tells the MIRRORED BITS software
to temporarily expect to see its own data looped back as its input. In this mode, LBOK will assert
if error-free data is received.
The LOO command with just the channel specifier, enables looped back mode on that channel for 5
minutes, while the inputs are forced to the default values.
=>> LOO A <ENTER>LOO A <ENTER>
Loopback will be enabled on Mirrored Bits channel A for the next 5 minutes.
The RMB values will be forced to default values while loopback is enabled
Are you sure (Y/N) ?
=>>
If only one MIRRORED BITS port is enabled, the channel specifier may be omitted. To enable
looped back mode for other than the default 5 minutes, enter the desired number of minutes
(1 - 5000) as a command parameter. To allow the looped back data to modify the RMB values,
include the DATA parameter.
=>> LOO 10 DATA <ENTER>LOO 10 DATA <ENTER>
Loopback will be enabled on Mirrored Bits channel A for the next 10 minutes.
The RMB values will be allowed to change while loopback is enabled.
Are you sure (Y/N) ? N
Canceled.
=>>
To disable looped back mode before the selected number of minutes, re-issue the LOOP command
with the R parameter. If both MIRRORED BITS channels are enabled, omitting the channel specifier
in the disable command, will cause both channels to be disabled.
=>> LOO R <ENTER>LOO R <ENTER>
loopback is disabled on both channels.
=>>
PAS Command (View/Change Passwords)
PAS allows you to inspect or change existing passwords. To inspect passwords, type:
=>>PAS <ENTER>PAS <ENTER>
1:OTTER
B:EDITH
2:TAIL
=>>
Courtesy of NationalSwitchgear.com
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