Owner manual

Chapter 2 Operating the
PowerSmart Socket PQM
Communicating with the PowerSmart Socket PQM
28 PowerSmart Socket Power Quality Meter
Optical Port
The PowerSmart Socket PQM has an ANSI-compatible optical
infrared port for local meter reading via a hand-held unit or a
portable PC.
The IR port is identified in the PowerSmart Socket PQM as
port COM1. It is factory preset to 19200 bps, 8-bits/No-parity
data format, and the Modbus RTU protocol.
You can change the default baud rate or protocol for the IR
port from the front display or via Power Software (see Setting
Up Serial Communication Ports in Chapter 5).
Serial Communications
The PowerSmart Socket PQM has an embedded RS-485 serial
port, and the second configurable RS-232/RS-485 port can
be provided with an expansion Ethernet module. See the
PowerSmart Socket PQM Installation Manual for the serial
port connections.
The embedded RS-485 port is identified in the meter as port
COM3, and the expansion RS-232/RS-485 serial port is
identified as port COM4.
The expansion port is provided with two green RX and TX
LEDs that blink when the port receives or transmits data.
You can check the present serial port settings via the Device
Info display (see Device Info Display in Chapter 3).
Both serial ports are factory preset to 19200 bps, 8-bits/No-
parity data format, and the Modbus RTU protocol. See Setting
Up Serial Communication Ports on how to change the factory-
set options for your serial ports.
Ethernet Connection
An expansion 10/100Base-T Ethernet module provides a
direct connection to the Ethernet.
The port has two indication LEDs that operate as follows:
LED Color Status Description
LINK Green Lights The good link is detected (slightly blinks
when the port receives or transmits data)
ACT Yellow Blinks Activity on the port - the port receives or
transmits data
You can check the Ethernet port MAC address and present IP
address setting via the Device Info display (see Device Info
Display in Chapter 3).
See Setting Up the Ethernet in Chapter 5 on how to configure
your Ethernet port.
The meter provides two TCP servers configured for the
Modbus/TCP (port 502) and DNP3.0/TCP (port 20000)
protocols.
The TCP servers support 5 simultaneous Internet connections
with client applications. Connection through the Ethernet port
does not require device identification. The meter responds to