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CA Series PC/104
2. Select a COM number for the port from the Port Number pull-down list. Select the Auto Enumerating
COM Number option to map subsequent ports automatically. The port numbers will be assigned in sequence.
For example, if COM 1 is assigned to Port 1, then COM 2 (if not already occupied) will be assigned to Port 2, etc.
Rx, TX FIFO
1. 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. Select the Set the change to all ports option to apply this
Rx FIFO Trigger to all ports.
2. 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. Select the Set the change to all ports option to apply the just
defined Tx FIFO Size to all ports.
High
Middle
Low
3. Click OK to save the port settings and then click OK in the Property window to finish the port settings
procedure.
Checking the Status
The PComm Diagnostic program is a useful tool to check the status of Moxa's multiport serial boards. The
program can be used to test internal and external IRQ, TxD/RxD, UART, CTS/RTS, DTR/DSR, etc. Use this
program to ensure that your Moxa boards and ports are working properly.
Tx FIFO
(Byte)
CA Series
CB Series
64
128
32
64
1
1
Rx FIFO
(Byte)
CA Series
56
28
1
3-55
Software Installation
CB Series
120
60
1
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