Nomenclature, Connecting to the internal rpdu nmc – Dell Metered PDU LCD User Manual
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51
Serial Interface Operation
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NOTE:
You must be logged in to the rPDU before commands can be sent.
NOTE:
See Page 56 though Page 64 for descriptions of the serial interface commands, including syntax, query options,
and example responses.
Nomenclature
The serial interface CLI uses a different nomenclature to represent current and voltage readings than the
nomenclature that displays on the LCD. Table 12 lists the CLI nomenclature that corresponds to voltages and
currents.
Table 12. Serial Interface Nomenclature
Voltage Nomenclature
1,2
Description
XN
L1 Line to Neutral on a Wye-configured rPDU
YN
L2 Line to Neutral on a Wye-configured rPDU
ZN
L3 Line to Neutral on a Wye-configured rPDU
XZ
L1 Phase to Phase on a Delta-configured rPDU
XY
L2 Phase to Phase on a Delta-configured rPDU
YZ
L3 Phase to Phase on a Delta-configured rPDU
Current Nomenclature
Description
X
L1 (Phase 1)
Y
L2 (Phase 2)
Z
L3 (Phase 3)
1
Line-to-Neutral voltage will not be reported on a Delta-configured rPDU.
2
Line-to-Line voltage will not be reported on a Wye-configured rPDU.
Connecting to the Internal rPDU NMC
NOTE:
The following instructions describe the procedure to establish and save a serial interface connection to an rPDU
using HyperTerminal. The serial interface is supported on Microsoft Windows 2000, XP 2003, Vista Windows, and above.
To set up a connection between the rPDU internal NMC and a computer:
1
Verify that the serial cable is correctly connected between the rPDU and your computer.
2
Create or open a previously saved connection to the rPDU:
If you have already created a connection to the rPDU you want to access, go to Step 3.
If you are creating a new connection, go to Step 5.
3
Open a saved connection using one of the following options:
Select Start > All Programs > Accessories > Communications > HyperTerminal > saved connection
name.ht.
On the New Connection dialog, select File > Open. The Open dialog displays. In the File Name window,
select the saved connection file you intend to use. Click Open.