Introduction Overview The Sealevel Systems SeaLINK+485 equips the PC with 1 USB to RS-530/422/485 Asynchronous serial port providing a versatile interface for common RS-530/422/485 needs. The advantage of this product over more traditional approaches is that it doesn’t require opening the computer case, nor does it require resources such as I/O ports or IRQ’s.
Before You Get Started What’s Included The SeaLINK+485 is shipped with the following items. If any of these items is missing or damaged, contact the supplier. • SeaLINK+485 USB to RS-530/422/485 Serial I/O Adapter USB Cable Part Number CA179 for Connecting to Upstream Host/Hub •...
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The SeaLINK+485: can be connected to any Upstream Type “A” port either at the PC host or an Upstream Hub. The SeaLINK+485 is hot-pluggable, meaning there is no need to power down your computer prior to installation.
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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, Programs group.
Configuration Electrical Interface Selection The port on the SeaLINK+485 has the ability to be used as RS-530/422/485, RS-422 or 2 wire RS-485. This is selectable via the DIP-switch SW1. The chart below describes each of the switch position’s function. Please refer to the following page for switch setting examples. Switch SW1 ON enables, adds, and connects.
Technical Description The SeaLINK+485: utilizes a USB UART. This chip features programmable baud rate, data format, 128 byte Dual Port TX Buffer, and 384 byte Dual Port RX Buffer. The RS-530/422/485 transceiver supports data rates up to 921.6K baud. Features Hot-Pluggable device that doesn’t require opening the case...
10 to 90% R.H. 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...
The loopback test first transmits a HEX pattern, 55AA, and then an ASCII string of data. If this test passes, then the SeaLINK+485 is ready for use in your application.
If possible, please have the adapter installed in a computer ready to run diagnostics. Sealevel Systems provides an FAQ section on its web site. Please refer to this to answer many common questions. This section can be found at http://www.sealevel.com/faq.asp.
The RS-530 specification defines two types of interface circuits, Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE). The Sealevel Systems adapter is a DTE interface. RS-422 The RS-422 specification defines the electrical characteristics of balanced voltage digital interface circuits.
Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured I/O products. We are able to offer this warranty due to our control of manufacturing quality and the historically high reliability of our products in the field. Sealevel products are designed and manufactured at its Liberty, South Carolina facility, allowing direct control over product development, production, burn-in and testing.
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