8.
Application Wiring
8.1
RS-485 (Transmitter is controlled
automatically by ATTA
RXD+(485)
RXD-(485)
RS-422/485 PCI Card
Please note that the RS-422/485 PCI Card supports optional
auto echo mode. If enabled, when the data was sent to the
RS-485 transmitter, the exact data will be sent back to its
receiver simultaneously. The application program can use the
echoed data to check if the RS-485 bus was currently in
collission condition and need to be resent
17
RS-422/485 Multiport Serial PCI Card
TM
Hardware)
2-wire twisted pair cable
DATA(+)
DATA(-)
RS-485 Device
RS-422/485 Multiport Serial PCI Card
2.
Package Check List
Before installing the RS-422/485 multiport serial PCI card to your
computer, please make sure the following accessories are well
packed in the box:
□ Multiport serial PCI Card x 1
□ Optional Octopus-Cable (only for 4-port and 8-port models)
□ Driver CD × 1
□ Installation Guide × 1
(Mark the check box to help you check it)
2