Date Code 20090730 Instruction Manual SEL-734 Meter
Section 10
Communications
Overview
There are various options for communicating with the SEL-734. The meter
communications ports consist of the following:
➤ EIA-232 (2 standard, 1 optional)
➤ EIA-232/485
➤ Internal Telephone Modem
➤ 10BASE-T Ethernet Port
➤ Type 2 Optical Port
This section explains how to connect serial communications cables and how
the SEL-734 uses communications protocols.
A command summary and command explanations are also included.
Communications Options
Serial Ports
Table 10.1 describes the various serial ports available in the SEL-734 models.
Use the serial port to connect to a computer serial port for local
communications or to a modem for remote communications.
Internal Modem
An optional communications card is available for the SEL-734, allowing
selection of an internal telephone modem. For a list of modem-related settings
and definitions, see Table 10.2. Certain modem settings are required for
user-specific applications. For protocols where the meter dials out for
unsolicited reporting, such as DNP, a phone number (PH_NUM), time to
attempt dialing (MDTIME), and time between dial-out attempts (MDRET)
settings are required.
Table 10.1 SEL-734 Meter Models and Available Serial Ports
SEL-734
Meter Model
Number
Reference
Figures
Rear Panel Front Panel
Serial
Port 2
(EIA-232)
Serial
Port 3
(EIA-232)
Serial
Port 4C
(EIA-232)
Optical
Port F
0734ES1-XX Figure 1.2 XX X
0734ES1-2X Figure 1.2 XXXX
Courtesy of NationalSwitchgear.com
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