Moxa Technologies CP-118EL - Manual (Page 26)

PCI Express Board User’s Manual Serial Programming Tools
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4. Select a COM number for the port from the Port Number pull-down list.
5. Select the Auto Enumerating COM Number option to map subsequent ports automatically.
The port numbers will be assigned in sequence. For example, if COM 3 is assigned to Port 1,
then COM 4 (if not already occupied) will be assigned to Port 2, etc.
6. Select an Rx FIFO Trigger from the Rx FIFO Level pull-down list. Rx FIFO trigger levels
of High, Middle, and Low are available, with the default set to High (120 bytes). Select Set
the change to all ports option to apply this Rx FIFO Trigger to all ports.
7. Select a Tx FIFO Level from the Tx FIFO Level pull-down list. Tx FIFO Levels of High,
Middle, and Low are available, with the default set to High (128 bytes). Select Set the
change to all ports option to apply the just defined Tx FIFO Size to all ports.
Tx FIFO Rx FIFO
High 128 120
Middle 64 60
Low 1
1
Unit: Bytes
8. Click OK to save the port settings, and then click OK in the Property window to finish the
port settings procedure.