Rockwell Automation 2711E PanelBuilder 1400e Modbus Communications - Manual (Page 27)

4–4 Defining Communications
Publication 2711E-6.12 – November 1997
Tip: Use a name that will help you to identify your controllers
when you are assigning tags later in your application. For
example, you could name your controllers according to their
locations or according to the machine or part of the process they
will be controlling or monitoring.
Device
Select the type of device you are using from the drop-down list.
The type of device determines the addressing syntax and range
for all the tags with addresses on this node.
For Modbus applications, select 5-digit addressing or 6-digit
addressing, depending on the device you are using. See the user
manual for the device you are using, to determine whether to use
5- or 6-digit addressing.
Channel
The Channel number is 1 by default. The application network
type that you specified when you created your application refers
to this channel. You cannot change this value. This field
maintains compatibility with RSView

and provides future
communication option expansion.
Station
Type the address of the device.
For Modbus applications, values are between 1 and
247 (decimal), whether the station is local or bridged.
Timeout
Type the number of seconds (0.100 to 6553.500) you want the
terminal to wait before reporting a communication error. The
default timeout period is 3 seconds.
Enabled
Normally nodes are enabled, allowing data collection. However,
while you are debugging your application or troubleshooting your
network, you can disable a node to prevent communication faults
or invalid data. Once the application file is downloaded and
running, any values normally sent to a disabled node will be
recorded in the terminal, but the actual device value will remain
unchanged.
To disable nodes, clear the Enabled check box.
Important: Make sure the nodes are enabled before you run
an application in an online environment.
2. When you’ve finished configuring nodes, choose Close.
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