DeLOCK RS-422/485 User manual

RS-422/485 Multiport Serial PCI Card
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RS-422/485 Multiport Serial PCI
Card
Installation Guide
DOC#PM-5902x-A0

RS-422/485 Multiport Serial PCI Card
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Contents
1. Introduction........................................................ 1
2. Package Check List ..........................................2
3. Board Layouts and Connectors ....................... 3
3.1 2S with DB9 Male Connectors ...........................................3
3.1.1 JP5: UART Input Clock Speed Selector .................... 3
3.1.2 JP1: RS-422/485 Mode Selector.................................4
3.1.3 S1,S2 Connector Pin Assignments ............................. 5
3.1.4 S1,S2 Terminator Settings ............................................ 5
3.2 2S with Terminal Block Connectors ..................................6
3.2.1 JP5: UART Input Clock Speed Selector .................... 7
3.2.2 JP1: RS-422/485 Mode Selector.................................7
3.2.3 S1,S2 Terminal Block Connectors Pin Assignments 8
3.2.4 S1,S2 Terminator Settings ............................................ 8
4. Installing the RS-422/485 PCI Card .................. 10
5. Installing Drivers................................................. 11
5.1 Windows 98, ME, 2000, XP, 2003........................................11
5.2 Windows NT 4.0 ...................................................................11
6. Set RS-485 in 2-wire (Half Duplex) Mode......... 12
6.1 Windows 2000, XP...............................................................13
RS-422/485 Multiport Serial PCI Card
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RS-422/485 Multiport Serial PCI Card
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RS-422/485 Multiport Serial PCI Card
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6.2 Windows 98, ME ..................................................................14
7. Set High Baud Rate............................................ 15
7.1 Windows 2000, XP...............................................................15
7.2 Windows 98/ME ..................................................................16
8. Application Wiring............................................. 17
8.1 RS-485 (Transmitter is controlled automatically by ATTATM
Hardware)...................................................................................17
8.2 RS-422 (Transmitter buffer is always enabled)................18

RS-422/485 Multiport Serial PCI Card
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1. Introduction
Congratulation on your purchasing this high performance
RS-422/485 multiport serial PCI card. The card is high speed PCI
bus based and plug-and-play compliant. It works at 2-wire
(with Auto Transceiver Turn Around feature, ATTATM) and 4-wire
configuration. Its UARTs are fully 16C950 (128-byte FIFO)
featured and compatible with most of the serial devices
available from the market.
Features:
 Fully PCI Bus Specifications 2.2 and Power Management 1.0
compliant
 128-byte on-chip FIFO and arbitrary trigger levels and
interrupts, and automatic hardware/software flow control
 Up to 921.6 Kbps baud rate, over 700 Kbps data throughput
 5,6,7,8,9-bits data framing
 Precise RS-485 ATTATM (Auto Transceiver Turn Around) feature
to disable the line driver by hardware
 Supports echo mode to help software determining
unexpected bus collisions
 Universal PCI compatible with 3.3/5V PCI and PCI-X buses
 Optional 15KV ESD surge and optical isolation protection
models are available
 Supports Win98/Me, NT, Windows 2000 and XP,2003, and
Linux
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8.2 RS-422 (Transmitter buffer is always
enabled)
Please note that the RS-422/485 PCI Card supports 4-wire RS-422
mode. In this mode, the data was sent and received
independently. So you need to connect them with the
cross-over, twisted pair cable.
For the model with DB9 connectors, it also provides two
handshaking signials RTS+/RTS- and CTS+/CTS- to do the
hardware flow control. In this case, the wiring will be as follows:
RS-422/485 PCI Card
TXD+
TXD-
RXD+(485)
RXD-(485)
TX+
TX-
RX+
RX-
4-wire twisted pair cable
RS-422/485 PCI Card RS-422 Device
TXD+
TXD-
RXD+
RXD-
RTS+
RTS-
CTS+
CTS-
RS-422 Device
TXD+
TXD-
RXD+
RXD-
RTS+
RTS-
CTS+
CTS-

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8. Application Wiring
8.1 RS-485 (Transmitter is controlled
automatically by ATTATM Hardware)
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
RXD+(485)
RXD-(485)
DATA(+)
DATA(-)
2-wire twisted pair cable
RS-422/485 PCI Card RS-485 Device
RS-422/485 Multiport Serial PCI Card
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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）

RS-422/485 Multiport Serial PCI Card
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3. Board Layouts and Connectors
3.1 2S with DB9 Male Connectors
3.1.1 JP5: UART Input Clock Speed Selector
HI LOW
J2: S1
JP7: S1
Terminator
Enable/Disable
J3: S2
JP8: S2
Terminator
Enable/Disable
JP1: RS-422/485
Mode Selector
JP5: UART Clock Speed
Selector
UART Input Clock Speed = 1.8432MHZ,
the maximum baud rate is 115.2Kbps
(Default)
HI LOW
UART Input Clock Speed = 14.7456MHZ,
the maximum baud rate is 926.1Kbps. In
this setting, you need go to Windows’
COM port Properties to detect this input
clock automatically and fit this clock
value (see the software setup for more
details)
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7.2 Windows 98/ME
 Set the JP5 to “HI”
 In the Windows COM port properties as the following figure,
select〝Data rate 〞and click on 〝Automatic Crystal
Detection 〞
 The
〝Crystal Frequency〞
settings will be set to
〝14.7456MHZ
〝, then click 〝OK〞
 The settings will be saved by Windows. You don’t need to
configure it again whenever you restart the system

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7. Set High Baud Rate
The RS-422/485 card was shipped at the low baud rate
(115.2Kbps maximum). To set to high baud rate to 921.6Kbps
maximum, 2 steps are required:
 Change the UART input clock jumper (JP5) to “HI”
 Go to the COM port’s settings of Windows’ Device
Manager to let it detect the clock speed automatically
7.1 Windows 2000, XP
 Set the JP5 to “HI”
 In the Windows COM port properties as the following figure,
select 〝Data rate 〞and click on 〝Detect Crystal
Frequency〞
 The
〝Crystal Frequency〞
settings will be set to
〝14.7456MHZ
〝, then click 〝OK〞
 The settings will be saved by Windows. You don’t need to
configure it again whenever you restart the system
RS-422/485 Multiport Serial PCI Card
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3.1.2 JP1: RS-422/485 Mode Selector
Mode Settings for both S1 and S2 (JP1):
Jumper Name Jumper Positions Mode and Termination Resistor
Setting
485
(Default)
2-wire RS-485 mode
485/422
422 4-wire RS-422 mode
RTS RS-485 Transmitter Buffer Enable is
Controlled by RTS (active high)
RTS/AUTO
AUTO
(Default)
RS-485 Transmitter Buffer is
controlled automatically by ATTATM
hardware circuit
ECHO Transmitting data will be echoed
back
ECHO/NO_ECHO
NO_ECHO
(Default)
No echo data
LOOP RTS will be connected to CTSLOOP/NO_LOOP
NO_LOOP
(Default)
RTS and CTS operate normally
 Please note that if the mode were set at “422” mode, the
other settings (AUTO, ECHO and LOOP settings) will take no
effect.
 The Echo mode is useful for the application program to
detect if the RS-485 bus were in a collision. If the echoed
data was not equal to the transmitted data, then the bus
was in a collision.
 If you want to set the RS-485 transceiver to “AUTO” mode,
you have to go to Windows Device Manager to turn on
this option as well. You only need to do it once and the
Windows will keep the settings afterward. Please note that
422
AUTO
N
O_ECHO
N
O_LOOP
485
RTS
ECHO
LOOP

RS-422/485 Multiport Serial PCI Card
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S1 and S2 have its own setting. You need to go to each
port to turn on both settings.
3.1.3 S1,S2 Connector Pin Assignments
3.1.4 S1,S2 Terminator Settings
S1 Terminator Settings (JP7):
Jumper Name Jumper Settings Termination Resistor Setting
IN TXD Terminator Enabled
JP7 (TXD) OUT
(Default)
TXD Terminator Disabled
IN
(Default)
RXD Terminator Enabled
JP7 (RXD)
OUT RXD Terminator Disabled
IN RTS Terminator Enabled
JP7 (RTS) OUT
(Default)
RTS Terminator Disabled
IN
(Default)
CTS Terminator Enabled
JP7 (CTS)
OUT CTS Terminator Disabled
Note: IN : Jumper Installed
1 5
6 9
9 Pins Signal
1 TXD- (DATA-)
2 TXD+ (DATA+)
3 RXD+
4 RXD-
5 GND
6 RTS-
7 RTS+
8 CTS+
9 CTS-
TXD Terminator
RXD Terminator
RTS Terminator
CTS Terminator
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6.2 Windows 98, ME
 In this examples, if the first port is COM5 and the second
port is COM6, go to the COM5’s “properties” and select
“RS485 Buf En Active high” for the DTR function
 Repeat the mentioned procedures to set the other port
(e.g. COM6)
Select〝RS485 Buf_En Active high 〞for
DTR function

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6.1 Windows 2000, XP
 Go the the COM3’s properties and set the mode to
“RS422/485”
 Choose RS485 buffer enable to “Active High”
 Set the other port (e.g. COM4) by the same procedures
mentioned.
Set〝RS422/485 〞
and
Active High 〞for
RS485 buffer enable
RS-422/485 Multiport Serial PCI Card
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OUT : Jumper Not Installed
S2 Terminator Settings (JP8):
Jumper Name Jumper Settings Termination Resistor Setting
IN TXD Terminator Enabled
JP8 (TXD) OUT
(Default)
TXD Terminator Disabled
IN
(Default)
RXD Terminator Enabled
JP8 (RXD)
OUT RXD Terminator Disabled
IN RTS Terminator Enabled
JP8 (RTS) OUT
(Default)
RTS Terminator Disabled
IN
(Default)
CTS Terminator Enabled
JP8 (CTS)
OUT CTS Terminator Disabled
Note: IN : Jumper Installed
OUT : Jumper Not Installed
3.2 2S with Terminal Block Connectors
J2: S1
JP7: S1
Terminator
Enable/Disable
J3: S2
JP8: S2
Terminator
Enable/Disable
JP1: RS-422/485
Mode Selector
JP5: UART Clock Speed
Selector

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3.2.1 JP5: UART Input Clock Speed Selector
3.2.2 JP1: RS-422/485 Mode Selector
Mode Settings for both S1 and S2 (JP1):
Jumper Name Jumper Positions Mode and Termination Resistor
Setting
485
(Default)
2-wire RS-485 mode
485/422
422 4-wire RS-422 mode
RTS RS-485 Transmitter Buffer Enable is
Controlled by RTS (active high)
RTS/AUTO
AUTO
(Default)
RS-485 Transmitter Buffer is
controlled automatically by ATTATM
hardware circuit
422
AUTO
N
O_ECHO
N
O_LOOP
485
RTS
ECHO
LOOP
HI LOW
UART Input Clock Speed = 14.7456MHZ,
the maximum baud rate is 926.1Kbps. In
this setting, you need go to Windows’
COM port Properties to detect this input
clock automatically and fit this clock
value (see the software setup for more
details)
HI LOW
UART Input Clock Speed = 1.8432MHZ,
the maximum baud rate is 115.2Kbps
(Default)
RS-422/485 Multiport Serial PCI Card
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6. Set RS-485 in 2-wire (Half Duplex)
Mode
To enable your card to work in the RS-485 2-wire mode, please
follow the following steps:
1. Set the Mode Jumpers (JP1) to “485” and “AUTO” as
mentioned in the above sections.
2. Proceed with the following settings in Windows
 Right click on
〝My Computer〞
and choose
〝properties〞
(Win98,ME) or 〝Manage〞(Win2000,XP)
 Choose
〝Device Manager 〞
and double click
〝Ports 〞
.
 You will see the 〝PCI Communications Port（COM3、
COM4）〞provided by your card.

 Double click on 〝PCI Communications Port (COM3) 〞
or 〝PCI Communications Port (COM4)〞then select
〝Settings 〞

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5. Installing Drivers
The RS-422/485 PCI card is plug-and-play so the driver
installation is quite straightforward. Please “Browse” to the
correct path on the Driver CD when Windows asking for the
driver’s location.
5.1 Windows 98, ME, 2000, XP, 2003
When Windows start-up, OS will display Found New Hardware
Wizard. Click〝Next 〞to continue.
1. Insert Driver CD into the CD/DVD-ROM drive（for example
D：）, select〝Search for a suitable driver for my device
(Recommended) 〞and click〝Next 〞.
2. Select
〝Specify a location 〞
then click
〝Next 〞
to continue,
click〝Browse 〞to specify the driver’s location.
D:\IO\OXFORD\
3. Click
〝Next 〞
to continue, and click
〝Finish 〞
to complete
the installation.
5.2 Windows NT 4.0
Since the Windows NT is not plug and play, you need to double
click the following icon in the D:\IO\OXFORD\WinNT4 folder or
run the Install_serial.exe in the same folder.
RS-422/485 Multiport Serial PCI Card
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ECHO Transmitting data will be echoed
back
ECHO/NO_ECHO
NO_ECHO
(Default)
No echo data
LOOP RTS will be connected to CTSLOOP/NO_LOOP
NO_LOOP
(Default)
RTS and CTS operate normally
 Please note that if the mode were set at “422” mode, the
other settings (AUTO, ECHO and LOOP settings) will take no
effect.
 The Echo mode is useful for the application program to
detect if the RS-485 bus were in a collision. If the echoed
data was not equal to the transmitted data, then the bus
was in a collision.
 If you want to set the RS-485 transceiver to “AUTO” mode,
you have to go to Windows Device Manager to turn on
this option as well. You only need to do it once and the
Windows will keep the settings afterward. Please note that
S1 and S2 have its own setting. You need to go to each
port to turn on both settings.
3.2.3 S1,S2 Terminal Block Connectors Pin Assignments
3.2.4 S1,S2 Terminator Settings
4 Pins Signal
1 TXD- (DATA-)
2 TXD+ (DATA+)
3 RXD+
4 RXD-
TXD Terminator
RXD Terminato
r
1
2
3
4

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S1 Terminator Settings (JP7):
Jumper Name Jumper Settings Termination Resistor Setting
IN TXD Terminator Enabled
JP7 (TXD) OUT
(Default)
TXD Terminator Disabled
IN
(Default)
RXD Terminator Enabled
JP7 (RXD)
OUT RXD Terminator Disabled
Note:
IN : Jumper Installed
OUT : Jumper Not Installed
S2 Terminator Settings (JP8):
Jumper Name Jumper Settings Termination Resistor Setting
IN TXD Terminator Enabled
JP8 (TXD) OUT
(Default)
TXD Terminator Disabled
IN
(Default)
RXD Terminator Enabled
JP8 (RXD)
OUT RXD Terminator Disabled
Note:
IN : Jumper Installed
OUT : Jumper Not Installed
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4. Installing the RS-422/485 PCI Card
1. Turn the system power OFF before installation!
2. Use static electricity discharge precautions.
3. Remove the chassis cover from your computer
4. Locate an unused PCI slot (typically white or ivory) and
remove the corresponding slot cover from computer
chassis.
5. Plug the RS-422/485 PCI card to the unused PCI expansion
slot and attached the I/O card bracket to the computer
chassis screw.
6. If your card’s connectors are terminal blocks, please install
the terminal blocks from the outside of the computer.
(Since the terminal blocks are bigger than the rear PCI
panel, you need install the card first, then the terminal
block connectors).
7. Put the chassis cover back on the computer.
8. Turn ON the power of your computer and peripherals.
9. Proceed with Software Driver Installation.