B&B Electronics 232XS5 Bedienungsanleitung

232XS53800 Manual Cover Page

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5109

Five Port Expandable Smart Switch

Model 232XS5

Document No. 232XS53800

This product designed and manufactured in Ottawa, Illinois USA

of domestic and imported parts by

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

Orders 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 91-92444 -- Fax: +353 91-92445

Internet:

www.bb-europe.com

1997 B&B Electronics -- Revised October 2000

2000 B&B Electronics . No part of this publication may be reproduced or transmitted in any form or by any

means, electronic or mechanical, including photography, recording, or any information storage and retrieval

system without written consent. Information in this manual is subject to change without notice, and does not

represent a commitment on the part of B&B Electronics.

B&B Electronics shall not be liable for incidental or consequential damages resulting from the furnishing,

performance, or use of this manual.

All brand names used in this manual are the registered trademarks of their respective owners. The use of

trademarks or other designations in this publication is for reference purposes only and does not constitute an

endorsement by the trademark holder.

232XS53800 Manual Table of Contents i

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5109

TABLE OF CONTENTS

Chapter 1: INTRODUCTION...................................................1

Checklist.....................................................................................2

Specifications..............................................................................2

Chapter 2: SETUP....................................................................3

Port Configuration.......................................................................4

Serial Data Configuration............................................................6

RS-485 Support..........................................................................6

Chapter 3: Smart Switch Operation........................................7

Programming the Second Character..........................................8

Binary File Transfer ....................................................................8

Smart Switch/Port Combiner Mode ............................................9

Enhanced Timer Mode -- Timer Features ................................10

Expansion Mode.......................................................................13

Chapter 4: SOFTWARE ..........................................................15

Introduction...............................................................................15

Installation.................................................................................15

Setup.........................................................................................15

Default Values ..........................................................................16

Selecting Ports..........................................................................16

Parameters...............................................................................16

Appendix A: ASCII Character Codes.................................. A-1

Appendix B: Cable Charts .................................................. B-1

Chart 1. IBM PC DB25 Connector to Master Port ..................B-1

Chart 2. IBM PC DB9 Connector to Master Port ....................B-1

Chart 3. Modem DB25 Connector to Master Port...................B-2

Chart 4. IBM PC DB25 Connector to Ports A - E (DTE).........B-2

Chart 5. IBM PC DB25 Connector to Ports A - E (DCE).........B-3

Chart 6. IBM PC DB9 Connector to Ports A - E (DTE)...........B-3

Chart 7. IBM PC DB9 Connector to Ports A - E (DCE)...........B-4

Chart 8. IBM PC DB25 Connector to Ports A - E (DCE).........B-4

Chart 9. IBM PC DB9 Connector to Ports A - E (DCE)...........B-5

232XS2497 Manual 1

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5109

Chapter 1: INTRODUCTION

The RS-232 Five Port Expandable Smart Switch, Model

232XS5, allows one RS-232 host device to connect to as many as

five RS-232 devices. The switch can be controlled in three different

ways. The first way is referred to as smart switch mode or code

activated switch mode. In this mode, the switch is controlled by

sending a programmable preamble code to the "Master" port of the

232XS5. The second way the switch can be controlled is referred to

as port combiner mode. In port combiner mode, a slave port can

gain access to the master port by asserting a handshake line. If

none of the slave ports have their handshake line asserted, the

switch can be controlled using the preamble code. The third way the

switch can be controlled is the expander mode in which up to four

switches can be cascaded together to form up to 17 slave ports.

The master port can be configured as a DTE or DCE port by an

internal switch setting. If the master port is configured as a DTE

port, the five slave ports will become DCE ports. The 232XS5

supports the following signals: TD, RD, RTS, CTS, DSR, DTR and

DCD.

The 232XS5 has an enhanced timer mode which offers special

timer features. The timer features can be used to prevent slave

devices from receiving preamble commands, inadvertently switching

from binary/graphic file transfers, and inactive slave devices from

holding control of the master port.

The 232XS5 will work with baud rates from 1200 to 115.2K bps;

7 or 8 data bits; even, odd or no parity; and 1 or 2 stop bits (7,N,1 is

not allowed).

NOTE: The data format and rates mentioned are used to switch

the 232XS5. The communication between the devices can use

any format or data rate.

232XS53800 Manual

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5109

There are five LED's on the 232XS5 to indicate which port is

connected to the master port. The master port has a DB-9S female

connector and the slave ports have DB-9P male connectors. The

232XS5 requires 12Vdc at 100ma. which is provided through a

2.5mm power jack.

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 Smart Switch

2. Instruction Manual

3. (1) 3.5" floppy disk

If any of the items above are not in the shipping carton contact

the shipper immediately.

Specifications

Model: 232XS5

Size: 3.0"w x 5.5"l x 1.0"h

Power: 12Vdc to 16Vdc @ 100ma

232XS2497 Manual 3

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PH (815) 433-5100 -- FAX (815) 433-5109

Chapter 2: SETUP

The 232XS5 is set up using an eight-position dipswitch and a

three-position set of jumpers. This dipswitch is used to set the

communication format, port configuration and expansion switch

address. The jumpers are used to set the smart switch/port

combiner mode, to enable/disable the enhanced features and to

enable/disable Expander mode. To change the settings on the

switch, remove the power from the unit, and remove the screws (4)

from the bottom of the 232XS5. The dipswitch is located on the top

of the PC board (side with LED’s) and is labeled “SW1.” The other

dipswitch, labeled “SW2” is used to set the second character of the

preamble. After the switches and jumpers have been set to match

your requirements, you can put the unit back together. Table 1

shows the settings for dipswitch “SW1” and Table 2 shows the mode

settings for “JP6” jumpers.

* = FACTORY DEFAULT

Table 1. Communication & Port Setup

Dipswitch SW1

1 2 3 4 5 6 7 8

Setting

0 0 0 X X X X X 1200 Baud

1 0 0 X X X X X 2400 Baud

0 1 0 X X X X X 4800 Baud

1 1 0 X X X X X 9600 Baud *

0 0 1 X X X X X 19.2K Baud

1 0 1 X X X X X 38.4K Baud

0 1 1 X X X X X 57.6K Baud

1 1 1 X X X X X 115.2K Baud

X X X 0 X X X X 8 Data Bits *

X X X 1 X X X X 7 Data Bits

X X X X 0 X X X Parity Disabled *

X X X X 1 X X X Parity Enabled

X X X X X 0 0 X Expansion Address A *

X X X X X 1 0 X Expansion Address B

X X X X X 0 1 X Expansion Address C

X X X X X 1 1 X Expansion Address D

X X X X X X X 0 DCE master port *

X X X X X X X 1 DTE master port

0 = OFF 1 = ON X = DON'T CARE

232XS53800 Manual

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Table 2. Mode Setup

On = Jumper Installed Off = Jumper Removed X = DON'T CARE

* = FACTORY DEFAULT

Port Configuration

In order to determine the proper port configuration of the 232XS5, it

is necessary to have a basic understanding of the terms DCE and DTE.

RS-232 was designed, using DB-25 connectors, for connecting a DTE

(Data Terminal Equipment) device to a DCE (Data Communication

Equipment) device. Each device will have inputs on pins that

correspond to outputs on the same pins of the other device. For

example, a DTE device will transmit data out on pin 2 (on a DB-25) and

a DCE device will receive data in on pin 2 (on a DB-25). IBM PCs and

serial printers are DTE devices, modems are DCE devices.

Originally the RS-232 standard specified only a 25 pin D-sub

connector. Since then, the use of a 9 pin D-Sub supporting only a

portion of the original RS-232 signals has been used extensively,

starting with the IBM PC and migrating into other peripherals. The

pinouts for this 9 pin connector have since become the EIA/TIA 574

standard. This standard specifies a DTE device that transmits on pin 3

and receives on pin 2, with the DCE having the opposite configuration.

If an IBM PC compatible (DTE device) is going to be connected to

the 232XS5 master port, the master port should be configured as a

DCE port. If a modem (DCE device) is going to be connected to the

master port, it should be configured as a DTE port.

The master port can be configured as a DCE port (data received on

pin 3) or a DTE port (data received on pin 2) by setting dipswitch

“SW1”, position 8. To configure the master port as a DCE port, move

dipswitch “SW1”, position 8, to the "OFF" position. When the master

port is configured as a DCE port, ports A, B, C, D & E will become DTE

ports (Refer to Table 3). To configure the master port as a DTE port

move dipswitch “SW1”, position 8, to the "ON" position. When the

master port is configured as a DTE port, ports A, B, C, D & E will

become DCE ports (Refer to Table 4). Always power down the smart

switch when changing switch settings.

Jumper JP6

A B C

Setting

ON X X Enhanced Disabled *

OFF X X Enhanced Enabled

X ON X Smart Switch *

X OFF ON Expansion

X X ON Combiner Disabled *

X ON OFF Combiner Enabled

232XS2497 Manual 5

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Table 4. DTE MASTER PORT CHART

The 232XS5 supports the following RS-232 signals: TD, RD,

SG, RTS, CTS, DCD, DSR and DTR.

NOTE: All other lines are not connected.

The Smart Switch selects port A as the default port at power up.

Table 3. DCE MASTER PORT CHART

Master Port

(DCE)

Signal

,B,C,D & E Ports

(DTE)

Pin# Direction Description Pin# Direction

3 Input Transmit Data (TD) 3 Output

2 Output Receive Data (RD) 2 Input

7 Input Request to Send (RTS) 7 Output

8 Output Clear to Send (CTS) 8 Input

4 Input Data Terminal Ready (DTR) 4 Output

6 Output Data Set Ready (DSR) 6 Input

1 Output Data Carrier Detect (DCD) 1 Input

5 <-------> Signal Ground (SG) 5 <----->

Master Port

(DTE)

Signal

,B,C,D & E Ports

(DCE)

Pin# Direction Description Pin# Direction

3 Output Transmit Data (TD) 3 Input

2 Input Receive Data (RD) 2 Output

7 Output Request to Send (RTS) 7 Input

8 Input Clear to Send (CTS) 8 Output

4 Output Data Terminal Ready (DTR) 4 Input

6 Input Data Set Ready (DSR) 6 Output

1 Input Data Carrier Detect (DCD) 1 Output

5 <-------> Signal Ground (SG) 5 <----->

232XS53800 Manual

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Serial Data Configuration

In order for the host device that is connected to the master port

to select any of the five ports, the Smart Switch must be set to

match the host's communication format. Dipswitch “SW1” is used to

select the communication format of the Smart Switch. Switch

positions 1 through 3 select the baud rate. Switch position 4 selects

7 or 8 data bits. Switch position 5 determines if parity is enabled or

disabled.

NOTE: A data format of 7 data bits, no parity and one stop is

not allowed.

Switch position 8 selects the port configuration, see section titled

"Port Configuration". Refer to Table 1. Always power down the

smart switch when changing switch settings.

RS-485 Support

RS-485 support may be

provided by adding a Model

485SD9TB RS-232 to RS-485

converter or other recommended

device to the slave ports of the

232XS5.

Port power of about 30 mA may be applied through the DTR line

(Pin 4) of the slave ports with jumper JP1-JP5. Normally, the

jumpers are set to allow DTR to pass from the master port. To

enable port power on a slave port, move the jumper from the“OFF”

to “ON” position on the corresponding JP jumper. To allow DTR to

pass from the master port to the slave port, move jumper from “ON”

to “OFF” on the corresponding JP jumper. DTR can only pass

through when the port is selected and the jumper is set to the “OFF”

position on the corresponding slave port JP jumper.

Table 5. Port Power Jumpers

* = FACTORY DEFAULT

Jumper

JP1-5

Setting

“OFF” DTR passed *

“ON” Port Power

232XS2497 Manual 7

B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 -- FAX (815) 433-5109

Chapter 3: Smart Switch Operation

Smart Switch mode is selected when jumper “JP6-B” is ON

(installed). In Smart Switch mode, the 232XS5 is constantly looking

for the three character preamble code by monitoring the data that is

being received on the master port from the host device. The

232XS5 requires a three character preamble code to turn on and off

a port. The first character must be the ASCII escape character

(decimal 27). The second character is user programmable by

setting dipswitch “SW2”. “SW2” comes from the factory

programmed to the ASCII character STX (decimal 2). The third

character should be the ASCII upper case letters "A", "B", "C", "D" or

“E” (decimal 65, 66, 67, 68 or 69 respectively) to select those ports.

To turn off the selected port the third character should be the ASCII

EOT character (decimal 4). The ASCII characters and their

equivalent decimal values are listed in Appendix A.

Example:

To turn on port B you would send the three ASCII characters:

ESC STX B

If you were writing a program in BASIC to control the Smart

Switch you would form a string like this:

SWB$ = CHR$(27) + CHR$(2) + "B"

You could then send SWB$ to select port B. Similar strings

could be used for turning on the other ports. To turn off the ports the

string might look like this:

TOFF$ = CHR$(27) + CHR$(2) + CHR$(4)

When you are done with a port you can either select a new one

directly or turn off the selected port and then turn on the next one.

We recommend that you turn off the selected port before selecting

the next one. The turn off command consists of three characters

that are nonprinting (ESC STX EOT). If port A is selected and you

send the command to select port B, all three characters (ESC STX

B) will pass through the A port since it is still selected and the letter

B will show up on your port A device. For information on preventing

command codes from being received by slave devices, refer to the

Enhance Mode section.

NOTE: There is no delay through the Smart Switch and the

data is not buffered.

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