Rockwell Automation 2711E PanelBuilder 1400e Modbus Communications - Manual (Page 31)

5–2 Changing the Network Type
Publication 2711E-6.12 – August 1997
4. Choose Yes to change your DH+ application to Modbus. Choose
No if you do not wish to continue with the conversion.
Note: When converting to a Modbus application, the device type
defined for each node will be incompatible with the Modbus
network type. The following message will appear, prompting you
to convert the incompatible nodes.
5. Select Yes or No.
If you select Yes:
•
the device type of any node will be changed to 5-digit
addressing
•
the Unsolicited_Msgs node will be deleted
•
any node with an invalid station number for the Modbus
network will be changed to have a station number of 1
•
tag addresses will remain as DH+ addresses. You must change
these tag addresses to Modbus tag addresses.
If you select No, the network conversion will be cancelled.
To change the network type from Remote I/O to Modbus:
Important: When you change an application from Remote I/O to
Modbus, you will have to define the necessary Modbus
nodes and scan classes and add valid Modbus device tag
addresses.
1. Choose Change Network Type from the Tools menu.
2. In the Target Network field, choose Modbus.
3. To convert the tags in the application, select the Convert Tags
check box. If you don’t want to convert tags in the application,
clear the check from the Convert Tags check box.
•
If you don’t convert the tags to Modbus format, the tags’ data
source remains Remote I/O. For any tags to be used in the
Modbus application, you will have to change the data source
to Device and give them valid Modbus addresses.
•
If you do convert the tags to Modbus format, all the tags in the
database that are used by your application will be converted to
Device tags. Analog tags using the binary data type will be
switched to unsigned integer because binary is not supported
for Modbus applications.
"
Converting from Remote
I/O to Modbus