Moxa Technologies CP-168U - Manual (Page 53)

Software Installation
Smartio CP-168U User’s Manual 3-37
8. Select the just installed CP-168U board from the Board Type pull-down list, click on a
specific port item, and then click on the [Port Setting] button to open the Port X
window.
9. Select a COM number for the specific port from Port Number pull-down list.
10. Check the Auto Enumerating COM Number check-box to have subsequent ports
mapped to continuous COM numbers. For example, if COM3 is assigned to Port 1,
then COM4 will be automatically assigned to Port 2.
11. Select an Rx FIFO Trigger from the Rx FIFO Level pull-down list. Rx FIFO trigger
levels from High to Low are available, with a default value is High Level (120 bytes).
Check Set the change to all ports check-box to apply the just defined Rx FIFO
Trigger to all ports.
12. Select a Tx FIFO Size from the Tx FIFO Level pull-down list. Tx FIFO Level from
High to Low are available, with a default value is High Level (128 bytes). Check Set
the change to all ports check-box to apply the just defined Tx FIFO Size to all ports.
CP-168U v2 CP-168U v1
Tx FIFO Rx FIFO Tx FIFO Rx FIFO
High 128 120 64 56
Middle 64 60 32
28
Low 1 1 1 1
Unit: Bytes