Chapter 4 Using PAS Software
Communicating through a GSM/GPRS Modem
54
4. In the "Protocol" box, select the communications
protocol
for
Modbus/TCP
DNP3/TCP connections on port 20000. The host port is
set automatically as you select the protocol. Select
"Modbus RTU/TCP" for Modbus/TCP or "DNP3" for
DNP3/TCP.
5. In the "Wait for answer" box, adjust the time that PAS
waits for a connection before announcing an error and
the number of retries PAS uses to receive a response
from the device if communications fail.
You should use Windows Dial-Up networking to access the
EM720 via your wireless GSM/GPRS modem.
See your local GSM/GPRS modem manual and Windows help
on how to create a new Dial-Up PPP connection for your GPRS
modem.
Configuring a Dial-up GPRS Connection
To communicate through a GPRS modem:
1. On the Instrument Setup tab, select Internet Site.
2. Click on the Connection tab.
EM720 Power Quality and Revenue Meter
Setting up Communications
the
TCP
port.
The
connections
on
TCP
meter
provides
port
502
and
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