E-Mon E-PS-S-HV-RTU - Manual (Page 59)

Chapter 4 Using Power Software
Configuration tool Setting up Communications
PowerSmart Socket Power Quality Meter 59
connection when using the Modbus RTU or DNP3
protocol.
It does not affect Modbus ASCII
communications. If there are many applications
running on your PC, Power Software might be
prevented from responding to received characters
fast enough and may close the communication while
the device is still transmitting. If you frequently
receive the “Communication error” message, try to
increase “Break Time-out”. This time is added to the
message transfer time, and excessive increasing it
may slow down communications.
6. In the “Retries” box, define the number of attempts
that Power Software should use to receive a response
from the meter in the event the communication fails,
before announcing a communication failure.
Communicating through the Internet
If you are communicating through the Ethernet port, define
the IP address of your meter on the network.
1. On the Instrument Setup tab, select Internet Site.
2. Click on the Connection tab.
3. Click on the “IP address” and type in the IP address of
your meter. The default meter IP address preset at the
factory is 192.168.0.203.
4. In the “Protocol” box, select the communications
protocol for the TCP port. The meter provides
Modbus/TCP connections on TCP port 502 and
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
Power Software waits for a connection before
announcing an error and the number of retries Power
Software uses to receive a response from the device if
communications fail.