10.30
SEL-734 Meter Instruction Manual Date Code 20090730
Communications
Command Explanations
Figure 10.9 Using HyperTerminal to Write Settings
LOO Command (Loop Back)
The LOO command is used for testing the MIRRORED BITS communications
channel. For more information on M
IRRORED BITS, see Appendix G:
M
IRRORED BITS Communications.
With the transmitter of the communications channel physically looped back to
the receiver, the M
IRRORED BITS addressing will be wrong and ROK will be
deasserted. The LOO command tells the M
IRRORED 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>
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 5 minute default, 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>
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 <Enter>
Canceled.
=>>
To disable looped back mode before the selected number of minutes, re-issue
the LOOP command with the R parameter. If both M
IRRORED BITS channels
are enabled, omitting the channel specifier in the disable command will cause
both channels to be disabled.
=>LOO R <Enter>
Loopback is disabled on both channels.
=>>
Courtesy of NationalSwitchgear.com
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