Instruction/ maintenance manual of the product RS-485 CyberResearch
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Serial Communications USER’S MANUAL VER. D • OCT 2001 No part of this manual may be reproduced without permission COMT 366 Series RS-232 to RS-485 Converter with LCD, 38.4 kbps Data Rate COMT 366M: DB-25M Connector COMT 366F: DB-25F Connector ® CyberResearch ® , Inc.
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CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . iii 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns iv ©Copyright 2001 Cy berResearch , Inc. COMT 366 Series.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . v 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns vi ©Copyright 2001 CyberRese arch, Inc . 1.0 General Description ............................ 1 1.1 The LCD .................................................................................... 1 2.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . 1 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns 2 ©Copyright 2001 Cy berResearch , Inc. If the transmit signal is in the quiescent stat e (continuously low) onl y the lower segm ents and the vertical bar will be illum inated. This in dicates a constant nega tive state.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . 3 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.cyberresearch.co m 2.0 Specifications 2.1 Interface Conforms to EIA RS-232 and RS-485 specifications.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns 4 ©Copyright 2001 Cy berResearch , Inc. 3.0 Installation The COMT 366 is designed to interface EI A-232 with RS-485 equipm ent.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . 5 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns 6 ©Copyright 2001 Cy berResearch , Inc. 4.1 Termination of the Line There are four user-selectable resistive term inating values w hich are implem ented using switches A and B of the dipswitch.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . 7 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.cyberresearch.co m 5.0 T r oubleshooting The following is a list of possible problems th at m ay arise during the installation and solutions to those problem s: 1.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns 8 ©Copyright 2001 Cy berResearch , Inc. The converter may now be tested by setting the f ollowing switches: DCE on COMT 366 DTE Dip Switch 1 O.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . 9 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns 10 ©Copyright 2001 Cy berResearch , Inc. 7.0 Power The COMT 366 can be either host or self powered. In the self-powered mode, a wall- mounted transformer supplies low voltage AC and the required +12, -12, and +5 Volts are generated internally.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . 11 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.cyberresearch.co m Product Service Diagnosis and Debug CyberResearch, Inc. maintains technica l support lines staffed by experienced Applications Engineers and Technicians.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns 12 ©Copyright 2001 Cy berResearch , Inc. Intentionally Blank.
CyberResearch ® Serial Comm unications COMT 366 Seri es CyberResearch, Inc . 13 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.
COMT 366 Series CyberResearch ® Serial Comm unicatio ns 14 ©Copyright 2001 Cy berResearch , Inc. Intentionally Blank.
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CyberResearch, Inc. 25 Business Park Drive Branford, CT 06405 USA P: (203) 483-8815; F: (203) 483-9024 www.cyberresearch.com.
An important point after buying a device CyberResearch RS-485 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought CyberResearch RS-485 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data CyberResearch RS-485 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, CyberResearch RS-485 you will learn all the available features of the product, as well as information on its operation. The information that you get CyberResearch RS-485 will certainly help you make a decision on the purchase.
If you already are a holder of CyberResearch RS-485, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime CyberResearch RS-485.
However, one of the most important roles played by the user manual is to help in solving problems with CyberResearch RS-485. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device CyberResearch RS-485 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
