Watlow EZwarePlus Programming - Manual (Page 78)

70 EZwarePlus Programming Manual
1. Click Install to install the virtual COM port driver. The Virtual COM Port (PC <-> PLC) indicates the
virtual COM port used on the PC.

To change to another port, use the COM ports section of Device Manager on the PC.
2. PLC Connection Port (HMI <-> PLC):
For most PLCs, set the mode to Normal. Some Siemens PLCs will use MPI ISOTCP;
Enter the IP address of the HMI;
Select the TCP Port to use. This must the same setting as the Pass-Through Port Number set in the
EasyBuilder project, on the Model tab of the System Parameters dialog;
Set the COM port on the HMI connected to the PLC.
3. Click Apply to accept the settings.
4. Click Stop Pass-through to end.
5. Click Uninstall to uninstall the virtual COM port driver on the PC.
 The HMI must be powered and connected to the PC or Windows will not recognize the virtual port
as an available serial port.

When the HMI is in Ethernet pass-through mode, the HMI suspends communications with the PLC
and the application in the HMI does not run.
 Refer to Technical Note TN5047 for more information on “Using the Pass-Through Mode.”
1010-1015, Rev. 03