StarTech.com CB1S485 - Manual (Page 8)

Instruction Manual
5
RS-485 2-wire mode
To enable CB1S485 to operate in RS-485 2-wire mode:
1. Right-click on My Computer. If you are using Windows 98/ME, select Properties. If
you are using Windows 2000/XP, select Manage.
2. Choose Device Manager and double-click on Ports.
3. You will notice the added ports, listed as a PCI Communications Port. Double-click
on the COM Port you wish to configure, and select Settings.
Windows 2000, XP
1. In the PCI Communications Port Properties window, click on the Settings tab.
2. Under Hardware config, select RS422/485, and change the RS485 buffer enable
value to Active Low, using the dropdown box provided. Click OK to save and exit.
Windows 98, ME
1. In the PCI Communications Port Properties window, click on the Settings tab.
2. Change the DTR function to RS485 Buf_En Active Low, using the dropdown box
provided.
Baud Rate
By default, CB1S485 is set to a baud rate of 115.2Kbps (maximum). To increase the
baud rate to 921.6Kbps maximum:
Windows 2000, XP
1. As mentioned on page 2, move the HSPD switch to the down position.