BayTech 24SII User manual

OWNER'S MANUAL
MODEL 24SII
DATA EXCHANGE
SYSTEM
Rev. 2.00
BayTech publication #U140E084-01

Thank you for selecting a BayTech Model 24SII Data Exchange
System.
The data provided in this Owner's Manual explains the various ways
you can operate your unit and configure it to your computer system.
We suggest that you read this manual carefully before attempting to
install the Model 24SII and that you place special emphasis on correct
cabling and configuration. If you have any problems with your
installation, please contact a BayTech applications engineer for
assistance toll-free at 1-800-523-2702.
BayTech also manufactures data communications devices that
provide port sharing and expansion, networking, port contention,
buffered and non-buffered printer sharing; modems and multiplexers.
If you would like information on any of these models, please contact
BayTech Customer Service. A brief description of other BayTech
products is included in the back of this owner's manual.
We welcome any comments you may have about our products and
hope you will continue to look to BayTech for your data
communications needs.

NOTE: The information contained in this document is subject to
change without notice.
Copyright 1992 by Bay Technical Associates, Inc.
LaserShare, Print Master, Telplex, and Tran  x are registered
trademarks of Bay Technical Associates, Inc.
IBM, IBM PC, IBM PC/AT, IBM PC/XT are products and registered
trademarks of International Business Machines Corporation.
Hewlett-Packard LaserJet and Draftmaster I Plotter are products and
registered trademarks of the Hewlett-Packard Company.
WordPerfect is a product of WordPerfect, Inc.
WordStar is a registered trademark of MicroPro International Corp.
Windows is a registered trademark of Microsoft Corp.
All products or company names are trademarks of their respective
holders.

TABLE OF CONTENTS
1 GENERAL INFORMATION.............................................. 1
2 SPECIFICATIONS........................................................... 5
3 QUICK START............................................................... 10
4 INSTALLATION ............................................................. 12
4.1 UNPACKING....................................................... 12
4.2 BAYTECH SOFTWARE UTILITY DISKETTE..... 12
4.3 POWER............................................................... 14
4.4 CABLING PRELIMINARIES................................ 14
4.5 FACTORY DEFAULT CONFIGURATION .......... 15
4.6 CONFIGURATION PROCEDURE ...................... 16
4.7 PC SET-UP......................................................... 23
5 CABLING....................................................................... 25
5.1 PARALLEL PORTS............................................. 25
5.2 I/O MODULES M24SII-V01 AND M24SII-V03:
EIA-232 SERIAL PORTS WITH DB-25 MALE
DTE CONNECTORS........................................... 27
5.3 I/O MODULE M24SII-V04:
EIA-232 SERIAL PORTS WITH DB-25 FEMALE DCE
CONNECTORS................................................... 30
5.4 I/O MODULE M24SII-V06A: EIA-232 SERIAL
PORTS WITH RJ-45 MODULAR CONNECTORS 33

5.5 I/O MODULE M24SII-V07:
EIA-232/EIA-422 SERIAL PORTS WITH
RJ-45/RJ-11 MODULAR CONNECTORS........... 35
5.5.1 8-WIRE CONDUCTOR OPERATION....... 36
5.5.2 4-WIRE CONDUCTOR OPERATION....... 38
5.5.2.1 EIA-232 PORTS USING
BIDIRECTIONAL PRINTER
SHARING MODE................ 38
5.5.2.2 EIA-232 PORTS USING
UNIDIRECTIONAL PRINTER
SHARING MODE................ 39
5.5.2.3 EIA-422 PORTS USING
BIDIRECTIONAL PRINTER
SHARING MODE................ 41
5.5.2.4 EIA-422 PORTS USING
UNIDIRECTIONAL PRINTER
SHARING MODE................ 42
6 USER-PROGRAMMABLE FEATURES......................... 46
6.1 PORT LOGICAL NAME ...................................... 46
6.2 PORT DESIGNATION......................................... 46
6.3 NUMBER OF PRINTERS (M24SII-V02 HIGH
SPEED PARALLEL MODULE ONLY)................. 47
6.4 PORT SELECT CODE........................................ 47
6.5 PORT SELECT MODE........................................ 48
6.6 SERIAL PORT CONFIGURATION...................... 49
6.7 INPUT INACTIVITY TIMEOUT............................ 49
6.8 FORM FEED....................................................... 50
6.9 I.D. PAGE MESSAGE......................................... 50
6.10 DEFAULT PRINTER ASSIGNMENT................... 50

7 OPERATION.................................................................. 51
7.1 COMPUTER-TO-PERIPHERAL OPERATION.... 51
7.1.1 SHARING A SINGLE PERIPHERAL........ 51
7.1.2 CONTENDING FOR MULTIPLE
PERIPHERALS ........................................ 52
7.1.3 SPECIFIED SHARING OF MULTIPLE
PERIPHERALS ........................................ 53
7.1.4 BEGINNING AND ENDING A PRINT JOB 54
7.1.5 BUFFERING OF PRINT DATA................. 55
7.1.6 BUFFER CLEARING................................ 57
7.1.7 MINIMUM SIZE PRINT JOB..................... 57
7.2 COMPUTER-TO-COMPUTER OPERATIONS ... 57
7.2.1 INITIATING A COMPUTER-TO-
COMPUTER CONNECTION.................... 57
7.2.2 FILE TRANSFER...................................... 58
7.2.3 MODEM SHARING................................... 59
7.3 DATA FLOW CONTROL..................................... 61
7.3.1 HARDWARE HANDSHAKING ................. 61
7.3.2 XON/XOFF HANDSHAKING.................... 62
7.4 APPLICATION NOTE.......................................... 64
7.5 HP 3000 OPTION................................................ 65
8 CONFIGURATION......................................................... 66
8.1 MAIN CONFIGURATION MENU......................... 69
8.2 STATUS.............................................................. 71
8.3 PROGRAM PORT LOGICAL NAME................... 73
8.4 SET PORT DESIGNATION................................. 75
8.5 SET NUMBER OF PRINTERS (M24SII-V02
HIGH SPEED PARALLEL MODULE).................. 77
8.6 PROGRAM PORT SELECT CODE..................... 78
8.7 SET PORT SELECT MODE................................ 79
8.8 SET SERIAL PORT CONFIGURATION.............. 80
8.9 SET INPUT INACTIVITY TIMEOUT.................... 85

8.10 ENABLE/DISABLE FORM FEED MODE............ 87
8.11 PROGRAM I.D. PAGE MESSAGE...................... 89
8.12 ENABLE/DISABLE I.D. PAGE MESSAGE.......... 90
8.13 SELECT PRINT SCHEDULE FOR I.D. PAGE.... 92
8.14 PROGRAM DEFAULT PRINTER ASSIGNMENT 94
8.15 PROGRAM MODULE PRINTER SHARING
MODE.................................................................. 96
8.16 EXIT .................................................................... 96
9 MAINTENANCE............................................................. 97
10 REPACKING FOR SHIPPING....................................... 97
11 TECHNICAL SUPPORT ................................................ 98
12 FEDERAL COMMUNICATIONS COMMISSION RADIO
FREQUENCY INTERFACE STATEMENT..................... 99

APPENDIX A
CABLING TO MODEL 24SII................................................... 100
A.1 BETWEEN M24SII-V03 I/O MODULE AND IBM
PC OR PS/2 (DB-25)......................................... 100
A.2 BETWEEN M24SII-V03 I/O MODULE AND
IBM AT (DE-9)................................................... 102
A.3 BETWEEN M24SII-V03 I/O MODULE AND
HEWLETT PACKARD LASERJET ................... 104
A.4 BETWEEN MODEL 24SII AND ANY
CENTRONICS PRINTER.................................. 106
A.5 MODULAR CABLING USING M24SII-V06A I/O
MODULE........................................................... 107
A.6 M24SII-V07 I/O MODULE - EIA-422/EIA-232
PROTOCOL SELECTION................................. 110
A.7 MODULAR CABLING USING M24SII-V07 I/O
MODULE........................................................... 111
A.7.1 RJ-45 (8-WIRE) CABLING..................... 111
A.7.2 RJ-11 (4-WIRE) CABLING USING EIA-232
PROTOCOL AND BIDIRECTIONAL
PRINTER SHARING MODE................... 112
A.7.3 RJ-11 (4-WIRE) CABLING USING EIA-232
PROTOCOL AND UNIDIRECTIONAL
PRINTER SHARING MODE................... 114
A.7.4 RJ-11 (4-WIRE) CABLING USING EIA-422
PROTOCOL ........................................... 116

APPENDIX B
MODEL 24SII MODULE INSTALLATION............................... 117
B.1 MODEL 24SII I/O MODULE INSTALLATION.... 117
B.2 MODEL 24SII MEMORY MODULE
INSTALLATION................................................. 119
APPENDIX C
BUFFER EXPANSION/EPROM UPGRADE........................... 121
C.1 M24SII-M01 BUFFER EXPANSION ZIP
MODULE INSTALLATION ................................ 121
C.2 M24SII-M02 BUFFER EXPANSION SIMM
INSTALLATION................................................. 123
C.3 MODEL 24SII MAIN BOARD EPROM UPGRADE 125
C.4 MODEL 24SII MEMORY MODULE EPROM
UPGRADE......................................................... 126
C.5 MODEL 24SII I/O MODULE EPROM UPGRADE 127
APPENDIX D
MECHANICAL LAYOUTS....................................................... 129
D.1 MODEL 24SII FRONT PANEL.......................... 129
D.2 MODEL 24SII UNIT ASSEMBLY ...................... 130
D.3 MODEL 24SII MAIN BOARD ............................ 131
D.4 M24SII-M01 MEMORY BOARD ASSEMBLY.... 132
D.5 M24SII-M02 MEMORY BOARD ASSEMBLY.... 133
D.6 I/O MODULE: 4 PARALLEL PORTS
(BAYTECH P/N M24SII-V02)............................ 134
D.7 I/O MODULE: 4 HIGH SPEED SERIAL PORTS
(BAYTECH P/N M24SII-V03/V06/V08) ............. 135
D.8 I/O MODULE: 4 HIGH SPEED SERIAL PORTS
(BAYTECH P/N M24SII-V07)............................ 136

APPENDIX E
TROUBLESHOOTING............................................................ 137
APPENDIX F
INDEX..................................................................................... 143

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The BayTech Model 24SII Data Exchange System (DES) is a high
performance peripheral sharing solution offering versatile and flexible
connectivity between computers and various peripheral devices.
Computers may share plotters, modems, and laser printers, as well as
access other computers to share data bases and transfer files. Cost
effectiveness is thus achieved through resource sharing among
multiple users.
Figure 1 below shows a Model 24SII DES with twenty-four ports
installed. This application shows eight local PCs, a remote PC using
the BayTech Tran-x LPT-460 high speed parallel/serial converter, and
a file server from a LAN sharing a plotter, HP LaserJet Series II
printer, HP Laserjet Series IIISI printer, and a BayTech BX2448 2400
bps modem.
Figure 1


Each port offers high speed data communication with unidirectional
serial throughput up to 460k bits per second (bps) and parallel speeds
exceeding 60k characters per second (cps). The Model 24SII
controller board is used primarily as a data communications bus with
throughput capability up to 5.5M bps. The controller board allows
direct communication with the connected modules or routes data to
the memory module for print spooling. The dynamically allocated
buffer is available from 1MB up to 16MB.
Other features of the Model 24SII DES include:
1) High-speed data transfer to handle faster computers and
software;
2) Networking between pairs of computers or computers and
other devices such as modems, bar code readers, etc.;
3) Optimum flexibility: You select the right combination of serial
and parallel ports to meet your needs when ordering, and set
any port (other than Port 1 of Module 1) as a computer port or
a printer port;
4) Expandability so the system can grow with you;
5) Compatibility with virtually all computers, printers, plotters,
modems and other peripherals;
6) RJ-11/RJ-45 modular connectors on the serial ports are
optionally available to provide ease in cabling using four
or eight conductors.
7) IBM compatible software to allow for peripheral selection from
within Windows or graphics programs.


The Model 24SII's generous built-in buffer also saves valuable
computer time by spooling data until the printer or plotter can receive
it, keeping your users and computers working full time instead of
waiting. The spooling buffer on the Model 24SII DES can range from
0 MB to 16MB in 1MB or 4MB increments. The buffer is field
upgradable. For printer and plotter sharing applications, you must
have a minimum of 1MB installed on the initial purchase.
You may program the following features to meet the requirements of
your application: the Port Designation (computer or printer) for each
port, the individual Serial Port Configuration (baud rate, word size,
stop bits, parity, and XON/XOFF), the Printer Sharing Mode (high
speed serial modules only), the 4-Wire/8-Wire Operation (M24SII-V07
high speed serial module only), the Port Logical Names, the Input
Inactivity Timeout, the Port Select Code, the Port Select Mode, the
Form Feed Mode, the I.D. Page Message, and the Default Printer
Assignment. Programming of these features is easily accomplished
via the menu-driven configuration mode, and all changes are saved
permanently in non-volatile memory. BayTech provides terminal
emulation software for this purpose.
The number of ports on the Model 24SII DES can range from four to
twenty-four in multiples of four. The actual number of ports is
determined by the number of I/O modules installed. Each I/O module
has four (4) ports. The Model 24SII DES can have a maximum of six
(6) modules installed. You may install additional I/O modules after
initial purchase to increase the number of ports on your Model 24SII
DES.
We will refer to individual ports on the Model 24SII DES by module
number and port number. The module number for an individual port
may range from 1 to 6. The port number for an individual port may
range from 1 to 4, with Port 1 being the top port. For example, we
refer to the master configuration port as Port 1 of Module 1. Module 1
inserts to the slot marked "Module 1" on the top of the back panel.

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BayTech sells a high speed serial module for the Model 24SII DES
which supports EIA-422 protocol (M24SII-V07). This allows for long
cable distances using RJ-11 (4-wire) or RJ-45 (8-wire) modular
cabling. Use of the BayTech Tran-x LPT-460 or PS-02 high speed
parallel/serial converter products will allow your PC to transmit data at
460k bps using cable lengths up to 1000 feet. The same set up will
allow your cable distance to be up to 4000 feet if your Tran-x card is
configured to transmit data at 115k bps.
Figure 2 shows a PC with the Tran-x LPT-460 card and a PC with the
Tran-x PS-02 external module connecting to the M24SII-V07 module
via modular cabling.
Figure 2

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BASE UNIT: Supports 24 ports of communication at up to 5.5M
bps total throughput speeds.
I/O Modules: Four ports per module. Maximum 6 modules
per unit. Must have a minimum of 4 serial ports per unit.
Maximum Input Power Rating: 115 VAC, 50/60 Hz, .3A;
Opt 230 VAC, 50/60 Hz, .2A
Power Supply: +5VDC, 1.5A; +12VDC, 0.2A; -12VDC,
0.2A available.
Power Requirement: 115 VAC, 50/60 Hz, .3A; Optional 230
VAC, 50/60 Hz, .2A.
Single Channel Bus Speed: 5.5M bps.
Configuration memory: 8KB non-volatile memory holds
power-up default information.
Expansion slots: 6 external; 2 internal.
Edge connecters:20 pin; 6 total, one for each external
expansion slot.
26-Pin headers: Two for installation of internal memory or
internal modem modules.
Environment: 0

to 55

C temperature; 5% to 95% humidity.
Dimensions: 16¾"w x 10"d x 3½"h.
Weight: 9½ lbs. with 6 modules installed; 8 lbs. with no I/O
modules installed.
Indicators: 1 green power LED; 24 red port activity LEDs.
Mounting: Desk-top; rack-mount optional.
Warranty: One year on parts and labor.
MEMORY BOARD: 1 board standard - no memory installed.
Expandable to 16MB by one megabyte or four megabyte
increments.

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FACTORY POWER-UP DEFAULT CONFIGURATIONS:
Serial ports:
Baud rate: 9600.
Word size: 8 bits.
Parity: None.
XON/XOFF: Off.
Printer sharing mode (high speed serial modules
only): Bidirectional.
4-Wire/8-Wire Operation (M24SII-V07 high speed
serial module only): 8-wire.
Logical Name: Device A to D on each module.
Input Inactivity Timeout: 20 seconds.
Port Designation: Port 2 of Module 1- printer port; all other
ports - computer ports.
Default Printer Assignment: 0 for all computer ports
(contention mode).
Port Select Code: $SELECT.
Printer Select Mode: Anytime.
Form Feed Mode: Disabled.
I.D. Page Message: "This print job is for:".
I.D. Page Message Schedule: Before each print job.
I.D. Page Message Enable: Off.
Minimum Size Print Job: 3 characters.
USER-PROGRAMMABLE CONFIGURATIONS:
Easy to configure using on-screen menu. Choices are saved in
non-volatile memory to become the new power-up default
configuration.
Configurable Through any Serial Computer Port:
Baud rate for bidirectional transfer (high speed serial
modules only)*: 300, 600, 1200, 2400, 4800, 9600,
19200, 38400, 115.2k.
Baud rate for unidirectional transfer (high speed serial
modules only)*: 9600, 115.2k, 230.4k, 460.8k.
*Option configurable per port.


Printer Sharing Mode (high speed serial modules only):
(per module) Unidirectional or bidirectional.
4-Wire/8-Wire Operation (M24SII-V07 high speed serial
module only: 4-wire or 8-wire.
Word size*: 7 or 8 bits.
Parity*: Even, odd or none.
Stop bits*: 1 or 2.
XON/XOFF*: Enabled or disabled individually for transmit
and receive in bidirectional mode.
Input Inactivity Timeout*: 0 to 200 seconds.
Port Logical Name*: Maximum 16 characters.
Port Select Mode*: Mode A = Port selection anytime while
printing; Mode B = Port selection at beginning of
printing.
Form Feed Mode*: No form feed; Form feed at beginning of
printing only; Form feed at end of printing only; Form
feed at both beginning and end of printing.
I.D. Page Enable: on or off.
Default Printer Assignment: Can be any module and port
number of a printer port.
*Option configurable per port. Users connected to any module
other than Module 1 may configure these options for their
module only.
Configurable Through Host Port Only:
Port Select Code: 1 to 8 ASCII characters.
Port Designation: Computer port or printer port.
Number of Printers (M24SII-V02 high speed parallel
module only): 0 to 4.
I.D. Page Message: Maximum 40 characters.
I.D. Page Message schedule: Beginning of printing or end of
printing.

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MODULES
4 PORT HIGH SPEED SERIAL EIA-232 DES
Interface: Asynchronous EIA-232, -12v mark, +12v space.
Full duplex.
Connectors: Available in DB-25 male DTE (BayTech part
#M24SII-V03), DB-25 female DCE (BayTech part
#M24SII-V04 or RJ-45 (Baytech part #M24SII-V06A).
Handshaking bidirectional: CTS/DTR; selectable
XON/XOFF.
Handshaking unidirectional: CTS/DTR.
Flow Control Buffer: 1k character input/output.
Speed bidirectional transfer: 300, 600, 1200, 2400, 4800,
9600, 19200, 38400, 115.2k.
Speed unidirectional transfer: 9600, 115.2k, 230.4k, or
460.8k.
Power Consumption: +5VDC. 150mA; +12VDC, 25mA;
-12VDC, 25mA.
Dimensions: 3.3"h x 2.4"w.
4 PORT HIGH SPEED SERIAL EIA-422 DES
Interface: Asynchronous EIA-422 or EIA-232 (hardware
selectable), full duplex.
Connectors: RJ-45 (8-wire) with built-in RJ-11 (4-wire)
(BayTech part #M24SII-V07).
Handshaking bidirectional: HSO/HSI (EIA-422) or CTS/DTR
(EIA-232) handshaking lines; selectable XON/XOFF.
Handshaking unidirectional: HSO/HSI (EIA-422) or
CTS/DTR (EIA-232).
Flow Control Buffer: 1k character input/output.
Speed bidirectional transfer: 300, 600, 1200, 2400, 4800,
9600, 19200, 38400, 115.2k.
Speed unidirectional transfer: 9600, 115.2k, 230.4k, 460.8k.
Power Consumption: +5VDC. 150mA; +12VDC, 25mA;
-12VDC, 25mA.
Dimensions: 3.3"h x 2.4"w.


4 PORT HIGH SPEED PARALLEL DES
Interface: Centronics protocol.
Connectors: DB-25 female (BayTech part #M24SII-V02).
Handshaking: BUSY (pin 11); ACK (pin 10) -out only.
Flow Control Buffer: 1k character input/output.
Speed: 60k cps output; 58k cps input.
Dimensions: 3.3"h x 2.4"w.



This section provides basic installation instructions for persons
knowledgeable in the area of computer equipment installation. In this
section, we assume that the Model 24SII DES has never been
configured (i.e., all settings are factory default values). We will refer
to specific sections in this manual for more in-depth instructions on
installation, operation, and configuration. Please use the following
procedure:
Step Instructions/Application Questions Action/Special Instructions
1 Determine how many and what type of
modules are installed on the Model 24SII
DES. Identify which modules are serial
and which modules are parallel. Serial
modules are labeled as "232" or "422"
and parallel modules are labeled as
"PAR" on the back.
Proceed to Step 2.
2 Determine which ports on the Model
24SII DES your devices will be
connected to (parallel or serial). Also
determine the necessary Port
Designations on the Model 24SII DES
(computer or printer). Computers and
modems connect to ports designated as
computer ports. Printers and plotters
connect to ports designated as printer
ports.
Proceed to Step 3.
3 Does your application call for printer or
plotter sharing between multiple
computers and just one printer or plotter?
If no, proceed to Step 5.
If yes, proceed to Step 4.
4 Will your single printer or plotter connect
to the Model 24SII DES in serial? If no, proceed to Step 6.
If yes, there is no need to reconfigure any
Port Designations on the Model 24SII
DES. You will connect your serial printer
or plotter to Port 2 of Module 1. Proceed
to Step 7.
5 For multiple printer/plotter applications,
you will need to access configuration
mode and change the
Port Designation
of the ports to which your printers and/or
plotters will connect from computer ports
to printer ports.
Port 2 of Module 1 is the factory
designated printer port. This is a serial
port. If you have any serial printers or
plotters, you may connect one of them to
this port. If you do not have a serial
printer or plotter, you will need to
reconfigure the Port Designation for Port
2 of Module 1 to a computer port.
Proceed to Step 7.
6 If your application calls for multiple
computers sharing just one parallel Proceed to Step 7.