E-Mon E-PS-S-HV-RTU - Manual (Page 29)

Chapter 2 Operating the
PowerSmart Socket PQM Communicating with the PowerSmart Socket PQM
PowerSmart Socket Power Quality Meter 29
any device address and returns the received address in the
response message.
The meter also provides three TCP clients:
• SNTP client for periodic synchronization of the meter clock with
a publicly available SNTP server (see Setting-Up SNTP Client )
• eXpertPower TM client for communications with the proprietary
eXpertPower TM server (see Setting-Up eXpertPower Client )
• TCP notification client that can establish connections with a
remote Modbus/TCP server and send notification messages
either on events, or periodically on a time basis (see
Setting-
Up TCP Notification Client )
GSM/GPRS Wireless Communication
An optional GSM/GPRS modem can be provided with the
PowerSmart Socket PQM for wireless communications via a
cellular GPRS network. It is identified by the PowerSmart
Socket PQM as port COM2.
The module has two indication LEDs that operate as follows:
LED Color Status Description
LINK Green Flashes/Lights Flashes while the modem is registering
on the GPRS network and is lit up after
the meter has logged on the network
RSSI Yellow Flashes Received signal strength indicator -
shows the quality of the received signal
as follows:
Flashes once a second – good quality –
the signal strength is above -109 dBm.
Flashes twice a second – bad quality –
the signal strength is less than -109
dBm.
Shut off – the signal strength is not
known or not detected.
See Setting-Up Dial-Up GPRS Network in Chapter 5 on how to
configure the GPRS modem and how to check a dynamically
assigned IP address the meter got from the GPRS network.
You can also check the meter IP address and the quality of
the received signal via the Device Info display (see
Device
Info Display in Chapter 3).
The PowerSmart Socket PQM eXpertPower TM client and TCP
notification client can establish connections with remote
servers via a GPRS network. When client operation is
enabled, it automatically readdresses network connections to
the GPRS port if the GPRS module is installed.
NOTE
When either Ethernet or GPRS network parameters are
changed, the meter logs out of the network so the IP address
you might use for connecting to the meter will no longer be
effective. Check the meter for a new GPRS IP address either
from the front display, or via Power Software.