FINS/TCP Method

Section 7-4

Setting Range for Automatic Allocation of FINS Node Addresses

The range of node addresses that can be used as automatically allocated FINS node addresses is set in the Ethernet Unit’s Unit Setup. Normally (default status), node addresses 239 to 254 are allocated to each of the con- nections 1 to 16. These allocations can be changed, but the default node address setting range should be used if there is no particular reason for changing it. When automatically allocated FINS node addresses are used, the node addresses 239 to 254 are used for connecting to the host application, so set the node address of the Ethernet Unit to a number outside this range.

Changing the Setting Range for Automatic Allocation of FINS Node Addresses

Select the FINS/TCP Tab in the CX-Programmer Unit Setup. In the FINS/TCP

Tab, the allocated settings are displayed in a list for each connection number.

To change the automatically allocated FINS node addresses, use the mouse to select the connection number to be changed, and click the Edit Button. The FINS/TCP Connection Setting Dialog Box will be displayed.

The FINS node address allocated to the connection is displayed to the right of the Automatically Allocated FINS Node Address field. Change this number and click the OK Button. After setting, complete the operation by transferring the settings to the Ethernet Unit, in the same way as for normal Unit Setup data.

Note (1) Keep-alive Setting

The keep-alive function checks that the connection is still established (alive) if communications do not occur for a set time period through a communications line for which communications had been established.

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