AAxeon MSC-108B User manual

1
Thank you for purchasing this 8-port RS422/485 serial PCI Card. It is a
high performance serial port adapter that is specially designed to
connect RS422(4-wire) or RS485(2-wire) serial devices to any computer
with PCI slots. It supports all enhanced features with its 16C950 UARTs
that defined by serial port specifications.
Features:
Fully PCI Bus Specifications 2.2 compliant
Supports 8 RS422/485 over one single PCI slot
16C950 UART, built-in 128-byte on-chip FIFO
Up to 921.6 Kbps baud rate, over 700 Kbps data throughput
Precise RS485 ATTATM (Auto Transceiver Turn Around) feature to
disable the line driver by hardware
Optional 15KV ESD surge protection model is available
Supports Windows 98SE, 2000 and XP, 2003, Vista
MSC-108B
Installation Guide
1. Introduction
2. Connector and Jumper Layout
Term. Resistor
Ena/Disable
Jumpers
S8
:
:
S1
J3 (DB62F):
S1~S8
External
Connector
for Octopus
Cable
JP1: RS422/485
Mode Selector
JP2, JP3: 8 Spare Jumpers (no
function, keep the jumpers only)
J1: Factory
Use Only

8-Port RS422/485 Serial PCI Card
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RS485 User: Since the factory jumper settings are initially set at
2-wire RS485 mode. There is no need to change any jumper
settings from the default settings.
RS422 User: Change the mode jumper away from the ”485”
position. Keep the other settings unchanged.
1. Mode Jumpers:
Mode Settings for all S1~S8 Ports (JP1):
Jumper Name
Jumper Positions
Mode and Termination Resistor
Setting
S2H/S2L
S2L
(Default) Reserved for Future Use. Please do
NOT change it.
ECHO/NO ECHO ECHO
Transmitting data will be echoed
back
NO ECHO
(Default) No echo data
S1H/S1L
S1L
(Default) Reserved for Future Use. Please do
NOT change it.
422/485
485
(Default) 2-wire RS485 mode
422 4-wire RS422 mode
Please note that if the mode were set at “422” mode, the ECHO settings
will take no effect.
The Echo mode is useful for the application program to detect if the
RS485 bus were in a collision. If the echoed data was not equal to the
transmitted data, then the bus was in a collision.
2. S1~S8 Termination Resistor Enable/Disable Jumpers
(JP4,JP6,JP8,JP10,JP5,JP7,JP9,JP11):
S2H
ECHO
S1H
485
3. Jumper Settings
S2L
NO ECHO
S1L
422

8-Port RS422/485 Serial PCI Card
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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
69
9 Pins Signal
1 TXD- (DATA-)(A)
2 TXD+ (DATA+)(B)
3 RXD+
4 RXD-
5 GND
6 -
7 -
8 -
9 -

8-Port RS422/485 Serial PCI Card
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Note:
1. The drivers for Windows are shipped in the following folder
(E:\IO\OXFORD\RS422_485) of the driver CD. The files are in ZIP
format (e.g. V6515_RS422_485.ZIP). Please copy the file to your hard
drive C: or what folder you want, unzip it before proceeding with your
installations. We assumed you copy the file to your hard drive C: root
directory, and the unzipped folder is V6515_RS422_485. Please do
NOT use the drivers in its parent directory, E:\IO\OXFORD, since they
are used for RS232 instead of RS422/485.
2. PLEASE DO NOT LET WINDOWS AUTO SEARCH THE DRIVERS
AMONG THE FOLDERS, it will cause problems because the INF files
will be conflict in this case. Instead, please browse to the correct
location (folder) manually to make sure the correct drivers are chosen
and installed correctly.
4. Driver Installation for Win2000, XP and Vista
The Zip file is shipped in
this folder
Drivers for different OS are
unzipped to different folders