to ensure that all serially connected Modbus devices use a different Modbus device ID (Modbus slave address)
from that of the onboard Modbus TCP server. Up to 32 separate connections to the Modbus TCP server are
supported.
Figure 59 Modbus TCP Server
Enable Modbus TCP
Server
Select this checkbox to enable the Modbus TCP server and allow the WI-MOD-
xxx-E-5W to accept connections from Modbus TCP clients.
Device ID
Device ID assigned to the Modbus TCP server.
Save Changes
Save changes to non-volatile memory (reset is required to activate).
Save and Activate
Changes
Save to non-volatile memory and restart to activate changes.
Modbus TCP Client
The Modbus TCP client enables the WI-MOD-xxx-E-5W to connect to one or more Modbus TCP servers. To
configure the Modbus TCP client, click Modbus TCP on the menu, and then select the Enable Modbus TCP Client
checkbox to display the client parameters (see Figure 60).
Communications with the remote TCP servers is achieved using mappings. All Modbus mappings are directed
to/from the onboard I/O registers and are setup using the table in the Modbus Configuration page. To add a
mapping, select the
“Add Entry” button. A new default mapping is added to the table. You will need to edit this
entry to configure the parameters to match the application.