Max Block Size

The maximum number of addresses that will be read in the same block. If you type 0, it will default to 512.

Import Symbol Table

This option determines when the symbols are imported from the TwinCAT PLC or runtime.

After (re)connecting

The symbol table is dynamically imported every time this OI Server communicates with the target device. This option is supported by all versions of TwinCAT.

On startup only

The symbol table is imported only once, when this OI Server communicates with the target device for the first time after startup. This option is more efficient, but it is supported only by TwinCAT 3.1 or later.

Advanced

Click this button to open the Advanced Settings dialog box, which provides access to additional communication settings such as timeouts, retries, and buffer sizes. You might need to change these settings if the OI Server behaves unexpectedly during run time, but the default settings should work for most network configurations. For more information about these settings, see "Advanced Settings" in Operations Integration Server Manager Help.