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Related Manuals for SeaLevel SeaLINK plus 485I
Summary of Contents for SeaLevel SeaLINK plus 485I
- Page 1 S e a L IN K + 4 8 5 I U S E R M A N U A L P a rt # 2 1 0 4 Sealevel Systems, Inc. Phone: (864) 843-4343 PO Box 830 Fax: (864) 843-3067 Liberty, SC 29657 USA www.sealevel.com...
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Page 2: Table Of Contents
Figure 2 - RS-485, 2 Wire with Echo............8 Figure 3 - RS-485, 2 Wire No Echo ............8 Figure 4 – SeaLINK+485I cabling example...........14 Figure 5 - Asynchronous Communications Bit Diagram .....15 © Sealevel Systems, Inc. SL9092 Revision 4/2007 Sealevel Systems, Incorporated. All rights reserved. -
Page 3: Introduction
Introduction Introduction Overview The Sealevel Systems SeaLINK+485I equips the PC with 1 isolated USB to RS-422/485 Asynchronous serial port providing a versatile interface for common RS-422/485 needs. The SeaLINK+485I connects through the PC’s external USB port, so it does not require opening the computer case. Resources such as IRQ’s and I/O addresses are also not utilized. -
Page 4: Installation Instructions
Do not connect the device to a USB port until the software is installed. 1. Start Windows. 2. Insert the Sealevel Software CD in to your CD drive. 3. If ‘Auto-Start’ is enabled the installation window will automatically appear. Otherwise, navigate to the root directory of your CD drive and double-click the ‘autorun.exe’... -
Page 5: Physical Installation
RS-422 mode so changes are only required if you will be using the product in an RS-485 application. 1. After installing the software connect SeaLINK+485I to an Upstream Host or Hub. This indicates that the system has recognized the new device and will now proceed to locate a driver. Sealevel Systems SeaLINK+485I Page 3... - Page 6 Installation Since you have already installed the software by running “Setup”, simply click “Next” to proceed. The drivers that were installed during setup will automatically be used to configure the adapter for use. Sealevel Systems SeaLINK+485I Page 4...
- Page 7 Found”, indicating the actual port being created. If you view your systems Device Manager at this point, you should have a new “COM” port in the Port(COM & LPT) Device Class. It should look similar to the screen shot on the following page. Sealevel Systems SeaLINK+485I Page 5...
- Page 8 In this case, it is COM5: but this assignment will vary from system to system. At this point, the hardware is recognized. To verify operation use Sealevel Systems supplied WinSSD diagnostic utility. WinSSD can be found in the Start menu under Programs, SeaCOM group.
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Page 9: Configuration
Adds or removes the 1K ohm pull-down resistor in the RS-422/RS-485 receiver circuit (Receive data only) Connects the TX+ to RX+ for RS-485 two wire operation Connects the TX- to RX- for RS-485 two wire operation Not Used Sealevel Systems SeaLINK+485I Page 7... -
Page 10: Switch Examples
1 2 3 4 5 6 7 8 Figure 2 - RS-485, 2 Wire with Echo R S -48 5 O FF 1 2 3 4 5 6 7 8 Figure 3 - RS-485, 2 Wire No Echo Sealevel Systems SeaLINK+485I Page 8... -
Page 11: Technical Description
Input Transmit Positive Output Transmit Negative Output Technical Note: The modem control signals are biased as follows : RTS is connected to CTS, DTR is connected to DCD and DSR, and RI is tied inactive. Sealevel Systems SeaLINK+485I Page 9... -
Page 12: Specifications
Non-Condensing Non-Condensing Manufacturing • All Sealevel Systems Printed Circuit boards are built to UL 94V0 rating and are 100% electrically tested. These printed circuit boards are solder mask over bare copper or solder mask over tin nickel. Power Consumption Supply line... -
Page 13: Appendixa - Troubleshooting
3. When the SeaLINK+485I is configured properly, the USB Enabled LED (EN) will be lit. This should allow you to use Sealevel’s WinSSD utility and the supplied loopback plug to check communications. The supplied loopback plug connects TD to RD. -
Page 14: Appendixb - How T O Get Assistance
5:00 p.m. Eastern time. Technical support can be reached at (864) 843-4343. RETURN AUTHORIZATION MUST OBTAINED FROM SEALEVEL SYSTEMS BEFORE RETURNED MERCHANDISE WILL ACCEPTED. AUTHORIZATION CAN BE OBTAINED BY CALLING SEALEVEL SYSTEMS AND REQUESTING A RETURN MERCHANDISE AUTHORIZATION (RMA) NUMBER. Sealevel Systems SeaLINK+485I Page 12... -
Page 15: Appendixc - Electrical Interface
(Tx+ to Rx+ and Tx- to Rx-). Four wire mode allows full duplex data transfers. RS-485 does not define a connector pin-out or a set of modem control signals. RS-485 does not define a physical connector. Sealevel Systems SeaLINK+485I Page 13... -
Page 16: Appendixd - Ground Loop Phenomenon
DC to DC converter circuit or in the opto-isolator circuit. This condition will cause data errors and possibly destruction of the receiver circuit. DATA+ DATA- Isolated Isolated Ground Adapter Adapter Isolation Barrier Figure 4 – SeaLINK+485I cabling example Sealevel Systems SeaLINK+485I Page 14... -
Page 17: Appendixe - Asynchronous Communications
The data rate and communication parameters for asynchronous communications have to be the same at both the transmitting and receiving ends. The communication parameters are baud rate, parity, number of data bits per character, and stop bits (i.e. 9600,N,8,1). Sealevel Systems SeaLINK+485I Page 15... -
Page 18: Appendixf - Silk -Screen
Appendix F – Silk Screen Appendix F - Silk-Screen 2.09 in 1.39 in Sealevel Systems SeaLINK+485I Page 16... -
Page 19: Appendixg - Compliance Notices
Always use cabling provided with this product if possible. If no cable is provided or if an alternate cable is required, use high quality shielded cabling to maintain compliance with EMC directives. Sealevel Systems SeaLINK+485I Page 17... -
Page 20: Warranty
Sealevel Systems assumes no liability for any damages, lost profits, lost savings or any other incidental or consequential damage resulting from the use, misuse of, or inability to use this product. Sealevel Systems will not be liable for any claim made by any other related party.
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