Chapter 4 Using PAS Software
Setting up Communications
66
PM135 Powermeter Series
Figure
4-3: Protocol Setup Dialog Box
2.
In the
Protocol
box, select the
same communications protocol as
you have set in your meter.
3.
In the
Response Timeout
box,
define the maximum time that PAS
should wait for the meter response
before announcing a failure.
4.
In the
Break Timeout
box, define
the maximum line idle time that PAS
should wait after receiving the last
message character before closing a
connection with the Modbus RTU or
DNP3 protocol. It does not affect
ASCII communications. Note that
this time is added to the message
transfer
time,
and
excessive
increasing it may slow down
communications. If you frequently
receive the “Communication error”
message, try to increase
Break
Timeout
.
5.
In the
Retries
box, define the
number of attempts that PAS 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.
To configure the meter IP address:
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 IP address preset in the
meter
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 PAS waits for a
