Bay Technical Associates DS74 User Manual
DS Series Manual
DATA SWITCH
DS74 Serial Input - Output Module
BayTech Manual Publication
Revision May 2008
DS74 Serial I/O Module
Copyright 2007 by Bay Technical Associates, Inc.
BayTech, is a registered trademarks of Bay Technical Associates, Inc.
Windows 2000®, Windows XP® are products and registered trademark of Microsoft Corporation.
Tera Term is a product and registered trademark of Vector, Inc.
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DS74 Serial I/O Module
Cabling............................................................................................................................................................4
RJ-45 Cables and Adapters......................................................................................................................... 4
Adapters ......................................................................................................................................................5
Serial Setup.................................................................................................................................................5
Unit Configuration Menu.................................................................................................................................. 6
DS74 Configuration Menu...............................................................................................................................6
Status...........................................................................................................................................................7
Serial Port Configuration.............................................................................................................................. 7
Handshaking............................................................................................................................................7
Baud Rate................................................................................................................................................8
Word Size.................................................................................................................................................9
Stop Bits...................................................................................................................................................9
Parity........................................................................................................................................................ 9
RTS/DTR Line Driver Inactivity State.....................................................................................................10
Port Device Name...................................................................................................................................... 10
Port Device Type.......................................................................................................................................11
Verify DS74 is functioning:............................................................................................................................12
RESET DS74 Configuration.......................................................................................................................... 12
BayTech Product Warranty...........................................................................................................................13
Technical Support......................................................................................................................................14
Return Authorization Process:................................................................................................................... 15
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DS74 Serial I/O Module
Cabling
RJ-45 Cables and Adapters
DS74 EIA-232 RJ-45 Signal
Pin EIA 232
Signal
1 DTR Out
2 GND Signal Ground
3 RTS Out
4 TX Out Transmit Data Out
5 RX In Receive Data In
6 DSR In
7 GND
8 CTS In
Adapters Signals
Listed are the pin
Signal
Direction
Handshake, Line Driver Inactive State = Low: -12V when port is selected
unless programmed differently. Used as a handshake line to enable/disable
the receiving of characters.
Handshake, Line Driver Inactive State = Low: -12 V when port is selected
unless programmed differently.
Handshake In. +12V when not used.
Signal Ground
Used as a handshake line to enable/disable the receiving of characters.
specifications for the BayTech cable and adapters and the terminal COM ports:
Description
Signal RS-232
Port (DS)
RS-232
Port (RPC)
COM Port
DE-9 Pin
COM Port
DB-25 Pin
Signal
DTR 1 1 4 20 DSR
GND 2 2 1 GND
RTS 3 3 7 5 CTS
TXD 4 4 3 2 RXD
RXD 5 5 2 3 TXD
DSR 6 N/C 6 6 DTR
GND 7 7 5 7 GND
CTS 8 8 4 RTS
DTR 4 DCD
DCD 8 1 8 DTR
RI 9 22
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Adapters
DS74 Serial I/O Module
RJ08X007
Figures 1 and 2 provide visual representation of an RJ-45 receptacle and plug.
Serial Setup
• Connect the EIA-232 port to a Baytech device via the RJ08X007 rolled flat ribbon cable.
• Baytech makes custom cables for some devices.
• Default configuration is 9600 bps, 8 data bits, 1 stop bit and no parity.
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