8-Port RS422/485 Serial PCI Card
3
Note:
Please use the spare jumpers that were kept on JP2
and JP3. They were kept there to prevent from loosing.
Terminator Settings (JP4 for S1, JP6 for S2, JP8 for S3, JP10 for S4,
JP5 for S5, JP7 for S6, JP9 for S7, JP11 for S8):
Jumper Name
Jumper Settings
Termination Resistor Setting
S1 TERM
(S2 TERM)
(S3 TERM)
(S4 TERM)
(S5 TERM)
(S6 TERM)
(S7 TERM)
(S8 TERM)
IN
TXD (DATA- and DATA+)
Termination Resistor Enabled
OUT
(Default)
TXD (DATA- and DATA+)
Termination Resistor Disabled
Note: IN :
Jumper Installed
OUT : Jumper Not Installed
3.
S1~S4 Connector Pin Assignments
The RS422/485 signals are connected by a DB62 octopus
cable to 8 DB9-male connectors, the DB9-male pin
assignment as follows:
RS485 TXD Termination Resistor
Enable/Disable
1 5
6 9
9 Pins Signal
1 TXD- (DATA-)(A)
2 TXD+ (DATA+)(B)
3 RXD+
4 RXD-
5 GND
6 -
7 -
8 -
9 -
