PCI Express Boards
Configuring Intelligent RS-485
4-3
3.
Check the
Auto Enumerating COM Number
option to map subsequent ports automatically. The port
numbers will be assigned in sequence. Select
Interface
(RS-232, RS-422, RS-485-2W, or RS-485-4W)
from the drop-down box. An
Auto Tuning
function is provided with
RS-485-2W
. Click
OK
to save the
settings.
4.
Click
OK
on the
Ports Configuration
page to save the settings.
5.
Test if the communication is
OK
. If it’s not OK, proceed to Step 6.
6.
Click on the
COM Number
, click
Auto Tuning
next, and then click
OK
. The PCIe board will automatically
detect the RS-485 environment and suggest the correct Bias Resistor and Termination Resistor. Click
OK
to
save the setting. To apply the setting, you need to click
OK
on the
Ports Configuration
page.
7.
Test if the communication is
OK
. If it’s not OK, proceed to Step 8.
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