Documentation Number 232BSS41202 Manual
Cover Page
B&B Electronics Mfg Co Inc 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd Westlink Commercial Park Oranmore, Galway, Ireland Ph +353 91-792444 Fax +353 91-792445
Buffered Smart Switch
CE
Model 232BSS4
Documentation Number 232BSS41202
International Headquarters
B&B Electronics Mfg. Co. Inc.
707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350 USA
Phone (815) 433-5100 -- General Fax (815) 433-5105
Home Page: www.bb-elec.com
Sales e-mail:
orders@bb-elec.com
-- Fax (815) 433-5109
Technical Support e-mail:
support@bb.elec.com
-- Fax (815) 433-5104
European Headquarters
B&B Electronics Ltd.
Westlink Commercial Park, Oranmore, Co. Galway, Ireland
Phone +353 91-792444 -- Fax +353 91-792445
Home Page: www.bb-europe.com
Sales e-mail:
orders@bb-europe.com
Technical Support e-mail:
support@bb-europe.com
1999 B&B Electronics -- Revised May 2002
Documentation Number 232BSS41202 Manual
Table of Contents
i
B&B Electronics Mfg Co Inc 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd Westlink Commercial Park Oranmore, Galway, Ireland Ph +353 91-792444 Fax +353 91-792445
Table of Contents
Chapter 1: INTRODUCTION
......................................1
Specifications....................................................................................2
Default Parameters...........................................................................2
Checklist ...........................................................................................3
Chapter 2: OPERATION
................................................4
Symbols and Conventions ................................................................4
LED Indicators ..................................................................................4
Port Configurations ...........................................................................5
Smart Switch Only Mode ..................................................................6
Auto Select/Smart Switch Mode .....................................................13
Using the 232BSS4 as a Buffered Splitter/Combiner .....................15
Back to Back Operation (mux/demux) ............................................16
Cascading Multiple Switches ..........................................................17
Chapter 3: PORT CONNECTIONS
.......................20
DTE/DCE Explanation ....................................................................20
Chapter 4: SETUP SOFTWARE
.............................22
Introduction .....................................................................................22
Connection......................................................................................22
Software Installation .......................................................................23
Software Uninstall...........................................................................23
Setup Tutorial .................................................................................24
Appendix A: ASCII Character Codes ...................................... A-1
Appendix B: Cable Charts ........................................................ B-1
Chart B.1. DTE (PC) DB25 Connector to Master Port.................. B-1
Chart B.2. DTE (PC) DB9 Connector to Master Port.................... B-1
Chart B.3. DCE (Modem) DB25 Connector to Master Port .......... B-2
Chart B.4. DCE (Modem) DB9 Connector to Master Port ............ B-2
Chart B.5. Ports A-D (DTE) to DTE (PC) DB25 Connector .......... B-2
Chart B.6. Ports A-D (DTE) to DTE (PC) DB9 Connector ............ B-3
Chart B.7. Ports A-D (DTE) to DCE (Modem) DB25 Connector... B-3
Chart B.8. Ports A-D (DTE) to DCE (Modem) DB9 Connector..... B-3
Appendix C: Block Diagram ..................................................... C-1
Appendix D: Declaration of Conformity .................................. D-1
Documentation Number 232BSS41202 Manual
1
B&B Electronics Mfg Co Inc 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd Westlink Commercial Park Oranmore, Galway, Ireland Ph +353 91-792444 Fax +353 91-792445
Chapter 1: INTRODUCTION
The 232BSS4 provides communications to four devices from one
serial port. Each port uses a dedicated UART and includes an 8K
byte transmit buffer and an 8K byte receive buffer (16K bytes total).
Each port can be independently configured for data rate, data
format, and protocol. The Master port can send and receive data
from one of the Slave ports while the other Slave ports continue to
buffer data. The Master device can also broadcast the same
message to two or more Slave ports at once.
The 232BSS4 can be configured to send data automatically to
the Master port from each of the Slave ports when data is present
with an optional preamble identifying the port. It can also provide
two-way communications between the Master port and one Slave
port at a time. Switching and control is done through user-defined
three or four character command strings. All control sequences are
removed from the data stream, making the switch transparent to the
Slave devices. The PC setup software provided walks the user
through all possible parameters.
Switches can be cascaded to expand the 232BSS4 to more than
four ports. Two units can also be used back-to-back to provide
automatic connection between devices over a single data channel.
LEDs on the 232BSS4 indicate when the unit is powered up and
which port is selected to send data to the Master port.
PORT D
232BSS4
PORT A
PORT B
POR
T C
MASTER PORT
BUFFERED SMART SWITCH
+12 VDC
POWER
OTTAWA IL 61350 USA
Documentation Number 232BSS41202 Manual
B&B Electronics Mfg Co Inc 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd Westlink Commercial Park Oranmore, Galway, Ireland Ph +353 91-792444 Fax +353 91-792445
2
Specifications
Model:
232BSS4
Interface:
RS-232 asynchronous
Data Format:
7 or 8 data bits, even, odd, or no parity
(Master does not support 7 data bits with
no parity)
1 stop bit (fixed)
Data Rate:
1200 to 115.2 kbps
Flow Control:
Hardware(RTS/CTS) or None
Power Requirements:
+10 to +15 VDC @ 60 mA max.
Power Connector:
2.5 mm phone jack (+ tip)
Recommended Supply: B&B Model 232PS (Sold separately)
Operating Temperature: 0 to 70 C
Data Connectors:
Master DB25 female (DCE)
Slaves DB9 male x 4 (DTE)
Dimensions:
7.5 x 4.6 x 1.2 in. (19.0 x 11.7 x 3.0 cm)
Setup Software:
PC compatible,
Windows 95/98/NT/2000/XP
Supplied Accessories: CDROM with Setup Program
Instruction Manual
Default Parameters
When shipped, the 232BSS4 comes set up for the following
parameters:
Auto Select mode OFF
DTR NOT required to accept commands
THREE character command
Char1 = ESC (Decimal 27)
Char2 = STX (Decimal 2)
Char3 = "0" (Not Used)
Port Time = 1,000mS (not used)
Inactivity Time = 500mS (not used)
All ports 9600 Baud
All ports 8 Data Bits
All ports No Parity
All ports No Hardware Handshake required
Ports A-D No preamble
Port A selected to Transmit & Receive on Power-up
Refer to the following sections of the manual for what each of
these parameters means and how they can be changed.
Documentation Number 232BSS41202 Manual
3
B&B Electronics Mfg Co Inc 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd Westlink Commercial Park Oranmore, Galway, Ireland Ph +353 91-792444 Fax +353 91-792445
Checklist
Examine the shipping carton and contents for physical damage.
If damage is found, file a claim with the shipper immediately.
The following equipment should be in the shipping carton:
1. RS-232 Buffered Smart Switch model 232BSS4
2. Instruction Manual
3. (2) 3.5" floppy disks
If any of the items above are not in the shipping carton contact
the shipper immediately.
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