PCI Express Boards
Software Installation
3-7
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 at High (120 bytes). 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 at High (128 bytes). Select the
Set the change to all ports
option to apply the
just defined Tx FIFO Size to all ports.
Tx FIFO
(Byte)
Rx FIFO
(Byte)
High 128
120
Middle 64
60
Low
1
1
Interface and Termination Resistor
If you are using CP-118EL-A, CP-114EL, CP-114EL-I, CP-132EL, or CP-132EL-I, select Interface (RS-232,
RS-422, RS-485-2W, or RS-485-
4W) and Termination Resistor (120Ω, Enable, or Disable) for configuration.
For illustration purposes, we use the CP -114EL.
The following figure shows the settings for configuring the port for RS-422 and disabling Termination Resistor.
2. 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 for checking 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.
www.ipc2u.ru
www.ipc2u.com
www.moxa.pro
