Operating Spanner Modules at Modbus TCP
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Port 1 Spanner Data in the Web Server
Writing values to the outputs (QWs) will be reflected in the “Port 1 Spanner data map” in the web
server. These values can also be read in as inputs by a device hooked to port 2 of the spanner.
Port 2 Spanner Data in the Web Server
Input values (IWs) for port 1 will be reflected in the “Port 2 Spanner data map” in the web server.
These values need to be written by a device connected to port 2.
Connecting the Modbus Server Tester to Port 1 (192.168.1.103) and writing inputs 0…9 generates
the following data words on port 2 of the spanner.
Fig. 37: Web server – port 1 spanner data
Fig. 38: Web server – port 1 spanner data
Fig. 39: Modbus Server Tester – writing of data at port 2