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1519 Posts

Posted - 04 Mar 2003 :  18:48:26  Show Profile  Email Poster
Serial Communications Topic Index

ADS products support a wide range of serial communication protocols including RS-232, RS-422, RS-485, J1708, IrDA and TTL/CMOS serial. Here are links to some of the most useful serial topics on the ADS support forums.

For a list of all Topic Indices, see the Forum Topic Index

Edited by akidder 19-Mar-2003: Add link to 485 references and troubleshooting.
Edited by akidder 25-Mar-2003: Add link to serial loopback, 0V output troubleshooting and non-standard baud rates.
Edited by akidder 12-Jun-2003: Add link to serial connectors post
Edited by akidder 6-Oct-2004: Add link to max baud rate topic
Edited by ctacke 11-Jan-2005: Added J1708 info
Edited by akidder 11-July-2007: Add link to IrDA topic
Edited by jjoseph 16-Jan-2007: Add reference to sleep/wake considerations


1519 Posts

Posted - 11 Dec 2014 :  15:09:47  Show Profile  Email Poster
The following table provides a quick illustration of how the EIA-232, RS-422, RS-485, and J1708 are typically wired.

The two-wire configurations require that transmitters be disabled after sending.

The J1708 standard includes a higher layer that specifies how collisions are detected, and a randomized re-transmission delay based on the priority of the message/transmitter.

Full-duplex RS-485 networks can be configured in many ways, including a single transmitter on one pair and multiple nodes that can respond on the other pair.

Image source: GCX Users Manual, 110116-10012 (adapted)
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