User`s manual

PCI Express Board User's Manual Driver Installation: Windows Vista/2008
3-46
8. 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
9. If you use the CP-118EL-A, CP-114EL, CP-114EL-I, CP-132EL, CP-132EL-I, select Interface (RS-232,
RS-422, 2-wire RS-485, 4-wire RS-485) and Termination Resistor (120Ω, Enable or Disable) to configure.
Take the CP-114EL for example. If you would like to configure as RS-422 and no Termination Resistor,
please see figures below.
10. Click OK to save the port settings, and then click OK in the Property window to finish the port settings
procedure.
Using Moxa PComm Utility
The PComm Diagnostic program is a useful tool for checking the status of Moxa’s multiport 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.
To start the program, click Start
 Programs  PComm Lite 2000  PComm Diagnostic.