Connect Tech BlueStorm/Express RS-232 User manual

BlueStorm/Express
User Manual
Connect Tech Inc
42 Arrow Road
Guelph, Ontario
N1K 1S6
Tel: [phone]
Toll: 800-426-8979 (North America only)
Fax: [phone]
Email: [e-mail]
[email protected]
Web: www.connecttech.com
CTIM-00033 Revision 0.18 2020-11-13

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Table of Contents
Customer Support Overview .......................................................................................................................... 4
Contact Information........................................................................................................................................ 4
Limited Lifetime Warranty............................................................................................................................. 5
Copyright Notice ............................................................................................................................................ 5
Trademark Acknowledgment ......................................................................................................................... 5
Introduction .................................................................................................................................................... 6
Features .......................................................................................................................................................... 6
BlueStorm/Express Diagrams......................................................................................................................... 7
Figure 1: BlueStorm/Express RS-232/422/485 two and four port model hardware components
(BEG001, BEG002, BEG003, BEG004, BEG012, BEG013)................................................................................... 7
Figure 2: BlueStorm/Express RS-232/422/485 8 and 16 port model hardware components (BEG005, BEG006) ... 8
Figure 3: BlueStorm/Express Opto RS-232/422/485 four port model hardware components (BBG001)................ 9
Figure 4: BlueStorm/Express Opto (1 kV) RS-232/422/485 eight port model hardware components (BBG003) .. 10
Figure 5: BlueStorm/Express LP Opto RS232/422/485 two port model hardware components (BCG001) ........... 10
Figure 6: BlueStorm/Express LP 8-Port RS232/422/485 hardware components (BFG001/BFG002) .................... 11
Figure 7: BlueStorm/Express Isolated 8-Port RS232 hardware components (BDG001) ........................................ 11
Figure 8: BlueStorm/Express Isolated 4-Port RS232/422/485 Low Profile (BCG004) .......................................... 12
BlueStorm/Express Installation Overview ....................................................................................................13
Hardware Configuration................................................................................................................................13
Interrupts and Memory Address Selection.............................................................................................................. 13
Electrical Interfaces.......................................................................................................................................13
RS-232 Electrical Interface ..................................................................................................................................... 13
RS-422/485 Electrical Interface.............................................................................................................................. 13
Full Duplex Mode ............................................................................................................................................13
Half Duplex Mode ...........................................................................................................................................14
Multi-drop Mode..............................................................................................................................................14
Line Bias/Termination .....................................................................................................................................14
Jumper Block Settings ............................................................................................................................................ 14
Figure 8: Example of various port configuration jumper block settings ................................................................. 14
Tri-state Operation .................................................................................................................................................. 15
BCG004 and BBG008: BlueStorm/Express, Isolated ...................................................................................16
Connector Pinouts .........................................................................................................................................17
Table 1: DB-9 Male Pinouts - TYPE A ...................................................................................................................17
Table 2: RJ-45 Pinouts – TYPE B ...........................................................................................................................17
Table 3: DB-9 Male Pinouts - TYPE B....................................................................................................................18
Table 4: DB-9 Male Pinouts - TYPE C....................................................................................................................18
Table 5: DB-37 ........................................................................................................................................................19
Table 6: VHDCI-68 .................................................................................................................................................20
Table 7: HDB-78 (BBG003)....................................................................................................................................22
Table 8: HDB-78 (BBG008)....................................................................................................................................24
Table 9: HDB-62 Connector Pinout.........................................................................................................................26
Table 10: HDB-44 (BCG004)..................................................................................................................................28
RS-422/485 Recommended Wiring...............................................................................................................29
Type “A” RS-422/485 Wiring ................................................................................................................................ 29
Type “B” RS-422/485 Wiring................................................................................................................................. 29
Hardware Installation ....................................................................................................................................30
Installing the BlueStorm/Express into Your System............................................................................................... 30
Software Installation......................................................................................................................................30
Software First Installation (Windows) .................................................................................................................... 31
Hardware First Installation (Windows)................................................................................................................... 31
Port Settings............................................................................................................................................................ 32
Advanced Port Settings........................................................................................................................................... 33
Use FIFO Buffers.............................................................................................................................................33
Receive and Transmit FIFO Settings ...............................................................................................................33
Software Settings for RS-422/485........................................................................................................................... 33
Baud Rate Mapping .........................................................................................................................................34
Clock Frequency ..............................................................................................................................................34
COM Number ..................................................................................................................................................34
Specifications ................................................................................................................................................35

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Operating Environment........................................................................................................................................... 35
PCI Express Interface.............................................................................................................................................. 35
Communications ..................................................................................................................................................... 35
Baud Rates .......................................................................................................................................................35
Baud rate maximums differ based on product number. The specification sheet contains the maximum baud
rates for each product. ......................................................................................................................................35
UARTs .............................................................................................................................................................36
Surge Suppression................................................................................................................................................... 36
Isolation Ratings ..................................................................................................................................................... 36
Dimensions ............................................................................................................................................................. 36
Certification...................................................................................................................................................37

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Customer Support Overview
If you experience difficulties after reading the manual and/or using the product, contact the
Connect Tech reseller from which you purchased the product. In most cases the reseller can help
you with product installation and difficulties.
In the event that the reseller is unable to resolve your problem, our highly qualified support staff
can assist you. Our support section is available 24 hours a day, 7 days a week on our website at:
www.connecttech.com/sub/support/support.asp.See the contact information section below for
more information on how to contact us directly. Our technical support is always free.
Contact Information
We offer three ways for you to contact us:
Mail/Courier
You may contact us by letter at:
Connect Tech Inc.
Technical Support
42 Arrow Road
Guelph, Ontario
Canada N1K 1S6
Email/Internet
You may contact us through the Internet. Our email and URL addresses on the Internet are:
[email protected]
[e-mail]
www.connecttech.com
Note:
Please go to the Download Zone or the Knowledge Database in the Support Center on the Connect
Tech website for product manuals, installation guides, device driver software and technical tips.
Submit your technical support questions to our customer support engineers via the Support Center
on the Connect Tech website.
Telephone/Facsimile
Technical Support representatives are ready to answer your call Monday through Friday, from
8:30 a.m. to 5:00 p.m. Eastern Standard Time. Our numbers for calls are:
Toll Free: 800-426-8979 (North America only)
Telephone: [phone] (Live assistance available 8:30 a.m. to 5:00 p.m. EST,
Monday to Friday)
Facsimile: 519-836-4878 (on-line 24 hours)

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Limited Lifetime Warranty
Connect Tech Inc. provides a Lifetime Warranty for all Connect Tech Inc. products. Should this
product, in Connect Tech Inc.'s opinion, fail to be in good working order during the warranty
period, Connect Tech Inc. will, at its option, repair or replace this product at no charge, provided
that the product has not been subjected to abuse, misuse, accident, disaster or non-Connect Tech
Inc. authorized modification or repair.
You may obtain warranty service by delivering this product to an authorized Connect Tech Inc.
business partner or to Connect Tech Inc. along with proof of purchase. Product returned to
Connect Tech Inc. must be pre-authorized by Connect Tech Inc. with an RMA (Return Material
Authorization) number marked on the outside of the package and sent prepaid, insured and
packaged for safe shipment. Connect Tech Inc. will return this product by prepaid ground
shipment service.
The Connect Tech Inc. Lifetime Warranty is defined as the serviceable life of the product. This is
defined as the period during which all components are available. Should the product prove to be
irreparable, Connect Tech Inc. reserves the right to substitute an equivalent product if available or
to retract Lifetime Warranty if no replacement is available.
The above warranty is the only warranty authorized by Connect Tech Inc. Under no
circumstances will Connect Tech Inc. be liable in any way for any damages, including any lost
profits, lost savings or other incidental or consequential damages arising out of the use of, or
inability to use, such product.
Copyright Notice
The information contained in this document is subject to change without notice. Connect Tech
Inc. shall not be liable for errors contained herein or for incidental consequential damages in
connection with the furnishing, performance, or use of this material. This document contains
proprietary information that is protected by copyright. All rights are reserved. No part of this
document may be photocopied, reproduced, or translated to another language without the prior
written consent of Connect Tech, Inc.
Copyright 1997 - 2017 by Connect Tech, Inc.
Trademark Acknowledgment
Connect Tech, Inc. acknowledges all trademarks, registered trademarks and/or copyrights referred
to in this document as the property of their respective owners.
Not listing all possible trademarks or copyright acknowledgments does not constitute a lack of
acknowledgment to the rightful owners of the trademarks and copyrights mentioned in this
document.

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Introduction
Connect Tech's BlueStorm/Express family offers compatibility with the next generation in
computer bus standards. Available in two, four, eight and sixteen ports, these x1 lane PCI Express
serial cards make it easy to add a wide variety of serial communications options to computers with
a PCI Express bus. Your existing serial peripherals can connect directly to the BlueStorm/Express
serial card, using legacy application software from your PCI system.
Instead of relying on shared parallel bus architecture, PCI Express is built around bidirectional,
dedicated point-to-point “lanes.” This technology allows extensive future scalability. With the
future in mind, Connect Tech designed the BlueStorm/Express to ensure compatibility with future
versions of the PCI Express bus.
The BlueStorm/Express is perfect for a variety of applications such as retail/point of sale,
automated teller machines, transportation stations, lottery terminals and self-service kiosks, among
others.
Features
●2, 4, 8, or 16 hardware switchable RS-232/422/485 ports
●x1 lane PCI Express, compatible with any PCI Express slot width
●Supports full duplex (four wire) with RTS/CTS flow control, half duplex (two wire) with auto
TxD echo cancellation and multi-drop (four wire) communication modes in RS-422/485
●Hardware selectable for tri-state on power-up in RS-485 modes (applies to two and four port
BlueStorm/Express cards and the BlueStorm/Express Opto)
●Surge suppression on every signal of every port
●Operating temperature range of 0ºC to 70ºC
●Software support for QNX 4.X/6.X, Linux, Windows 2000/CE/XP/XP x64/XPe/Server
2003/Server 2003 x64/Vista/7
●Plug and play - no jumpers to set for memory or interrupt configuration
●Isolation available on select models:
oBBG001, BCG001:
3 kV rating of isolation for all signals port-to-port and on the board
oBBG003:
1 kV rating of isolation for all signals port-to-port and on the board
oBDG001:
2 kV rating of isolation for all signals port-to-port through cable and 3kV rating on
the board

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BlueStorm/Express Diagrams
Figure 1: BlueStorm/Express RS-232/422/485 two and four port model hardware components
(BEG001, BEG002, BEG003, BEG004, BEG012, BEG013)
Note: The above example is a four port BlueStorm/Express model. JC and JD
headers will not be installed on two port models.

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Figure 2: BlueStorm/Express RS-232/422/485 8 and 16 port model hardware components
(BEG005, BEG006)
Note: The above example is a 16 port BlueStorm/Express model. Headers JI
through JP will not be installed on eight port models

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Figure 3: BlueStorm/Express Opto RS-232/422/485 four port model hardware components
(BBG001)
Note: The above example is a four port BlueStorm/Express Opto model installed
with headers JA through JD.

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Figure 4: BlueStorm/Express Opto (1 kV) RS-232/422/485 eight port model hardware components
(BBG003)
Note: The above example is an eight port model where ports 5 through 8 feature
1 kV optical isolation and ports 1 through 4 are non-isolated.
Figure 5: BlueStorm/Express LP Opto RS232/422/485 two port model hardware components
(BCG001)
Port 1
Port 2

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Figure 6: BlueStorm/Express LP 8-Port RS232/422/485 hardware components
(BFG001/BFG002)
Figure 7: BlueStorm/Express Isolated 8-Port RS232 hardware components
(BDG001)
This board requires no jumpers.

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Figure 8: BlueStorm/Express Isolated 4-Port RS232/422/485 Low Profile
(BCG004)
Refer to the “BCG004 and BBG008: BlueStorm/Express, Isolated” section below, for details about the
settings of the mode switch.
Refer to “Table 10: HDB-44 (BCG004)” for IO connector signal pin out.

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BlueStorm/Express Installation Overview
Before you begin, take a moment to ensure your package includes the components that ship with
your product. These components should include:
•One BlueStorm/Express adapter
•One CD containing software and documentation
•One DB-9 male fan-out cable or other custom cable assembly (optional)
If any of these components are missing, contact Connect Tech (see more Contact Details) or your
reseller.
There are three stages to installing your BlueStorm/Express:
1. Hardware Configuration
Interrupts and Memory selection will be set by the host computer’s BIOS and operating
system. This section outlines jumper settings and configuration.
2. Hardware Installation
Installation involves the physical installation of the BlueStorm/Express into your computer.
Please note that you should configure any jumper settings prior to installing the board.
(If you choose to use the Windows Software First installation option, go to Section 3 before
Section 2.)
3. Software/Driver Installation
Load the appropriate driver for your Operating System, as found on the accompanying CD.
Installation guides are also available on the CD to aid you in this process. Please note that
Windows users have two options for software installation:
•Software First installations require that you install your drivers prior to installing the
hardware into your system.
•Hardware First installations require the installation of the drivers when prompted by the
operating system’s hardware detection process after the hardware installation.
Hardware Configuration
Interrupts and Memory Address Selection
The BlueStorm/Express board is a PCI Express card, so the host computer’s BIOS will
automatically set interrupts and memory addresses when you power up the system.
Electrical Interfaces
RS-232 Electrical Interface
This is the default setting for the selectable interface of the BlueStorm/Express. To operate a port
in RS-232 mode, no jumpers are set on the corresponding jumper block.
RS-422/485 Electrical Interface
The BlueStorm/Express models with support for RS-422/485 interface offer three modes of RS-
422/485 communication, as outlined below. (See Figure 8 to see examples of jumper settings.)
Full Duplex Mode
In this mode, TxD+/- is being driven to a known level all the time. This mode is typically used in
point-to-point situations much like RS-232. It is the default setting for RS-422/485 mode.

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Half Duplex Mode
In this mode the TxD+/- line driver is enabled only when data is transmitted and RxD+/- is
disabled when data is being transmitted. This mode is typically used in either point-to-point 2-wire
connections OR in multi-drop 2-wire bus connections. This mode requires software setup in
Control Panel – System – Hardware – Device Manager – Ports – CTI PCI Express UART. Click on
Advanced under Port Settings after the driver is installed. (See Port Settings).
Multi-drop Mode
In this mode the TxD+/- line driver is enabled only when data is transmitted and RxD+/- is
enabled all the time. This mode is typically used in multi-drop 4-wire connections. This mode
requires software setup in Control Panel – System Properties – Hardware – Device Manager – Ports –
CTI PCI Express UART. Click on Advanced under Port Settings. (See Half Duplex Mode above.)
Line Bias/Termination
The RS-422/485 transceivers transmit and receive, are optionally biased to produce a line level
mark condition through jumper selectable resistors. These options are typically used in multi-drop
4-wire connections.
Jumper Block Settings
The following jumper block diagram depicts typical settings on a four-port selectable
BlueStorm/Express. Jumper blocks JA and JB control ports 1 and 2, JC and JD control ports 3 and
4, respectively. (See Figures 1 to 7for location of jumper blocks.)
Figure 8: Example of various port configuration jumper block settings
In this example, Port 1(JA) is set to RS-232, Port 2 (JB) is set to RS-422/485
half duplex, Port 3 (JC) is set to RS-422/485 full duplex, and Port 4 (JD) is set
to RS-422/485 multi-drop.
RS-485 Selection: Install this jumper to configure a port for RS-422/485 mode. If the jumper is
not installed, the port will function in RS-232 mode. (All jumpers should be removed from any
port operating in RS-232 mode.)
TxD Control: Install this jumper to enable the RS-485 transmitter only when sending data. This
mode is useful for half-duplex operation when only one device is allowed to send data at a time. If
the jumper is not installed, the transmitter will always drive the line to an idle state when not
sending data.
RxD control: Install this jumper to enable the RS-485 receiver only when NOT transmitting data.
This is useful for half-duplex operation to prevent the transmitting device from receiving the data
it has sent. If this jumper is not installed, the receiver is always enabled and ready to receive data.
RxD ± Termination/Bias: Install this pair of jumpers to enable a 150 Ohm terminator across the
RxD+ and RxD- pins for the corresponding port. A biasing network is also enabled that drives the
receiver to an inactive or safe mode. The receiver can still receive data from another device and
the biasing helps to prevent the reception of data generated by noise on the transmission line. The
two jumpers for RxD termination/bias must be installed and removed as a pair.

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TxD ± Termination: Install this jumper to enable a 150 Ohm resistor across the TxD+ and TxD-
pins of the corresponding port.
Half Duplex and Multi-drop modes require you to select the appropriate mode via
software. Please refer to the readme.txt files found in the appropriate directories on
the CD.
Tri-state Operation
Jumper block J2 (see Figure 1 for an example) controls Tx tri-state on boot for ports configured in
RS-485 half duplex or multi-drop modes. This jumper block will have no effect on ports
configured as RS-232 or RS-485 full duplex.
For BlueStorm/Express 2/4 port cards, jumpering position 1 disables tri-state on boot for ports 1
and 2. Jumpering position 2 disables tri-state on boot for ports 3 and 4.
For BlueStorm/Express Opto and BlueStorm/Express LP Opto cards, jumpering position 1 enables
tri-state on boot for ports 1 and 2. Jumpering position 2 enables tri-state on boot for ports 3 and 4.
Jumper block J1 is used in diagnostic modes and should be left unpopulated unless directed
otherwise by Connect Tech’s technical support in the diagnosing of a system problem.
Power-On Tri-state (BlueStorm/Express Opto 1 kV model only)
BlueStorm/Express Opto 1 kV models offer a power-on tri-state similar to the Auto-485 mode
selection listed above. The BlueStorm/Express Opto 1kV will tri-state ports configured as RS-485
half duplex or multi-drop slave.
Jumper J1 controls the power-on tri-state functionality. Install a jumper on the first location of the
J1 in order to tri-state Port 1 at power-on. Install a jumper on the second position for Port 2, etc.
The ports will not come out of tri-state until the driver begins transmitting on the associated port.
Installing a jumper on J1 will have no effect on ports configured in RS-232 mode.
Half Duplex and Multi-drop Slave modes require you to select the appropriate mode via
software. Please refer to the readme.txt files found in the appropriate directories on the
BlueStorm/Express CD.

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BCG004 and BBG008: BlueStorm/Express, Isolated
Each Port has a 4-Position switch which sets the mode for the Port. Positions #1&2 set the basic mode for
the port. Positions #3&4 perform other setup functions.
M0
M1
Mode
OFF
OFF
Loopback
ON
OFF
RS232
OFF
ON
RS485 – half duplex
ON
ON
RS422
Term
Function
Slow Slew
Function
ON
120 ohm Receiver
termination enabled
ON
Slow Slew Rate enabled
OFF
Termination disabled
OFF
Slow Slew Rate disabled
Notes:
1. Loopback mode connects TXRX / RTSCTS, DSR, RI / DTRDCD at the Line Interface device,
and can be used to test the board operation through all isolators.
2. The termination function only works in RS422 or RS485 mode.
3. Slow slew rate works in any mode except loopback.
4. All switch settings can be over-ridden by software (switches can be left in any position when software
control is used). The board will power-up with the settings established by the switches, prior to software
controlling the settings.

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Connector Pinouts
Table 1: DB-9 Male Pinouts - TYPE A
This “TYPE A” DB-9 pinout applies only to the following Part Numbers:
BEG001, BEG002, BEG003, BEG004, BEG005, BEG006, BEG012, BEG013, BBG003, BFG001,
BFG002, BDG001
Pin No.
RS-232
Signal
Direction
RS-422/485
Signal
Direction
1
DCD
input
RxD B(+)
input
2
RxD
input
TxD B(+)
output
3
TxD
output
TxD A(-)
output
4
DTR
output
RxD A(-)
input
5
SG
signal gnd
SR
signal ref.
6
DSR *
input
CTS A(-)
input
7
RTS
output
RTS A(-)
output
8
CTS
input
RTS B(+)
output
9
RI *
input
CTS B(+)
input
* DSR and RI signals not available on the BDG001
Table 2: RJ-45 Pinouts – TYPE B
This “TYPE B” RJ-45 pinout applies only to the following Part Numbers:
BBG001, BCG001
Pin No.
RS-232
Signal
Direction
RS-422/485
Signal
Direction
1
N/C
no connect
RTS (-)
output
2
N/C
input
RxD (+)
input
3
RTS
output
RTS (+)
output
4
SG
signal gnd
SR
signal ref.
5
TxD
output
TxD (+)
output
6
RxD
input
RxD (-)
input
7
Gnd
ground
Gnd.
ground
8
CTS
input
CTS (+)
input
9
N/C
no connect
TxD (-)
output
10
N/C
no connect
CTS (-)
input
RJ-45 connector
1 10
Using the cable CAGRJ4509 will send the RJ45 signals to DB-9 male “TYPE B”
connectors. See below for the DB-9 “TYPE B” pinouts.
Male DB-9 Connector
1
5
6
9

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Table 3: DB-9 Male Pinouts - TYPE B
This “TYPE B” DB-9 pinout applies only to the following Part Numbers:
BBG001, BCG001
Pin No.
RS-232
Signal
Direction
RS-422/485
Signal
Direction
1
N/C
no connect
RxD (+)
input
2
RxD
input
RxD (-)
input
3
TxD
output
TxD (+)
output
4
N/C
no connect
TxD (-)
output
5
SG
signal gnd
SR
signal ref.
6
N/C
no connect
CTS (-)
input
7
RTS
output
RTS (+)
output
8
CTS
input
CTS (+)
input
9
N/C
no connect
RTS (-)
output
Male DB-9 Connector
1
5
6
9
Table 4: DB-9 Male Pinouts - TYPE C
This “TYPE C” DB-9 pinout applies only to the following Part Numbers:
BBG008
Pin No.
RS-232
Signal
Direction
RS-422
Signal
Direction
RS-485
Signal
1
DCD
input
N/C
no connect
N/C
no connect
2
RxD
input
TxD (+)
output
TxD+/RxD+
input/output
3
TxD
output
RxD (+)
input
N/C
no connect
4
DTR
output
N/C
no connect
N/C
no connect
5
SG
signal gnd
SR
signal ref.
SR
signal ref.
6
DSR
input
TxD (-)
output
TxD-/RxD-
input/output
7
RTS
output
RxD (-)
input
N/C
no connect
8
CTS
input
N/C
no connect
N/C
no connect
9
N/C
no connect
N/C
no connect
N/C
no connect
Male DB-9 Connector
1
5
6
9

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Table 5: DB-37
This DB-37 Connector pinout applies only to the following Part Numbers:
BEG002, BEG004
Pin
No.
Port
No.
RS-232
Signal
Direction
RS-422/485
Signal
Direction
1
1
SG
signal gnd
SR
signal ref
2
1
DTR
output
RxD A(-)
input
3
1
TxD
output
TxD A(-)
output
4
1
RxD
input
TxD B(+)
output
5
1
DCD
input
RxD B(+)
input
6
unused
unused
7
3
RI
input
CTS B(+)
input
8
3
CTS
input
RTS B(+)
output
9
3
RTS
output
RTS A(-)
output
10
3
DSR
input
CTS A(-)
input
11
4
RI
input
CTS B(+)
input
12
4
CTS
input
RTS B(+)
output
13
4
RTS
output
RTS A(-)
output
14
4
DSR
input
CTS A(-)
input
15
2
SG
signal gnd
SR
signal ref
16
2
DTR
output
RxD A(-)
input
17
2
TxD
output
TxD A(-)
output
18
2
RxD
input
TxD B(+)
output
19
2
DCD
input
RxD B(+)
input
20
1
RI
input
CTS B(+)
input
21
1
CTS
input
RTS B(+)
output
22
1
RTS
output
RTS A(-)
output
23
1
DSR
input
CTS A(-)
input
24
3
SG
signal gnd
SR
signal ref
25
3
DTR
output
RxD A(-)
input
26
3
TxD
output
TxD A(-)
output
27
3
RxD
input
TxD B(+)
output
28
3
DCD
input
RxD B(+)
input
29
4
SG
signal gnd
SR
signal ref
30
4
DTR
output
RxD A(-)
input
31
4
TxD
output
TxD A(-)
output
32
4
RxD
input
TxD B(+)
output
33
4
DCD
input
RxD B(+)
input
34
2
RI
input
CTS B(+)
input
35
2
CTS
input
RTS B(+)
output
36
2
RTS
output
RTS A(-)
output
37
2
DSR
input
CTS A(-)
Input

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Table 6: VHDCI-68
This VHDCI-68 Connector pinout applies only to the following Part Numbers:
BEG005, BEG006, BFG001, BFG002
Pin
No.
Port
No.
RS-232
Signal
Signal
Direction
RS-422/485
Signal
Signal
Direction
1
1
TXD
output
TXD-
output
2
1
RI
input
CTS+
input
3
1
DCD
input
RXD+
input
4
1
DTR
output
RXD-
input
5
1
RTS
output
RTS-
output
6
1
DSR
input
CTS-
input
7
1
RXD
input
TXD+
output
8
1
CTS
input
RTS+
output
9
2
TXD
output
TXD-
output
10
2
RI
input
CTS+
input
11
2
DCD
input
RXD+
input
12
2
DTR
output
RXD-
input
13
2
RTS
output
RTS-
output
14
2
DSR
input
CTS-
input
15
2
RXD
input
TXD+
output
16
2
CTS
input
RTS+
output
17
1, 2
SG
signal gnd.
SR
signal ref.
18
3, 4
SG
signal gnd.
SR
signal ref.
19
3
TXD
output
TXD-
output
20
3
RI
input
CTS+
input
21
3
DCD
input
RXD+
input
22
3
DTR
output
RXD-
input
23
3
RTS
output
RTS-
output
24
3
DSR
input
CTS-
input
25
3
RXD
input
TXD+
output
26
3
CTS
input
RTS+
output
27
4
TXD
output
TXD-
output
28
4
RI
input
CTS+
input
29
4
DCD
input
RXD+
input
30
4
DTR
output
RXD-
input
31
4
RTS
output
RTS-
output
32
4
DSR
input
CTS-
input
33
4
RXD
input
TXD+
output
34
4
CTS
input
RTS+
output