Communications 9300 Series User’s Guide
Page 106 Chapter 5 - Features and Applications
CommunicationsThis section describes the meter communications media types and communications
applications. The diagram below shows the 9300 Series meter communication ports
with a brief description of how each port is used.
The 9300 Series meter has numerous communication possibilities depending on
your ordering preferences. However, not all communications options are available
to each model. The standard meter has two or three serial communication ports:
an RS-485 port on COM 1, another RS-485 port on COM 2, and an Infrared port on
COM 3. Optional ports can include an internal modem, a 10 Base-T Ethernet
communication port, or a Profibus port. The table outlines the communication
(COM) ports for each 9300 Series meter. Information regarding Profibus —
available only on the 9300 meter - can be found in its sections.
MDM
COM1
COM1
COM2
Ethernet connection
All 9300 Series meters support the optional
Ethernet card. An Ethernet connection
supports ION, Modbus RTU, or Modbus/TCP
protocols.
COM 2:
RS-485 serial connection or EtherGate
The 9330 or 9350 meter provides COM 2.
If your meter has an Ethernet card, then
COM 2 functions as an Ethernet gateway
(EtherGate) — EtherGate transfers data
directly between an Ethernet network and
any devices that are wired to the meter’s
COM 2 port. If there is no Ethernet card,
then COM 2 functions as a serial
communications RS-485 port, and supports
ION, Modbus RTU, or DNP protocols.
COM 1:
RS-485 serial connection or ModemGate
All 9300 Series meters provide COM 1: an
RS-485 serial communications port that
supports these protocols: ION, Modbus
RTU, or DNP (9330 / 9350).
9330 and 9350 meters with an internal
modem can use the ModemGate protocol
on COM 1, allowing the meter’s internal
modem to communicate with the meter, the
WinPM.Net server computer, and any
devices that are wired to the meter’s COM 1
port.
The meter’s internal modem
communicates to the server
computer over the telephone
network.
COM 3:
Optical serial connection
All 9300 Series meters provide COM 3, an
optical (infrared) port. The optical port
(located on the front of the meter) is used for
serial communications, and supports these
protocols: ION, Modbus RTU, or DNP (9330
/ 9350). The port can also be used for
energy pulsing.
NOTE
The Profibus meter option for the 9300 uses
special COM connections.
COM 1COM 2COM 3Ethernet EtherGateModemModemGate
9300
9330
9350