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Step 2. Verify the Modbus TCP/IP Installation

You can use the Modbus TCP/IP Diagnostics program provided with the CIMPLICITY Modbus TCP/IP Communications option to check the basic configuration and operation of your network without starting a CIMPLICITY project. You can perform the following functions:

Read Holding Registers
Write Holding Registers

Note: For this program to function, you must have successfully installed the CIMPLICITY Modbus TCP/IP Communications option.

To start the program, select the Modbus TCP/IP Diagnostics icon in the CIMPLICITY menu.

The Network Options Ethernet Tester window opens.

This menu monitors data communications for a given Modicon Quantum PLC.


Step 2.1	Connect to a PLC