Moxa Technologies C104H/PCI Series - Manual (Page 34)

3-20 Smartio C104H/PCI Series User’s Manual
3. Select a COM number for the specific port from Port Number pull-down list.
Note! Step 4 is optional, if you want to assign COM numbers to Ports
manually.
4. Check Auto Enumerating COM Number check-box then the subsequent
ports are mapped to continuous COM numbers. For example, if COM 3 is
assigned to Port 1, then COM 4 will be automatically assigned to Port 2.
Note! You may skip Step 5 to 8, if the system doesn’t require a special
performance tuning.
5. Select an Rx FIFO Trigger from Rx FIFO Trigger pull-down list.
Rx FIFO trigger levels, at 1, 4, 8 or 14 bytes, are available, and the default
value is 14 bytes.
6. Check Set the change to all ports check-box then if desire to apply Rx FIFO
Trigger just defined to all ports.