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Old December 6th, 2007, 09:17 AM   #1
plc noob
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Question ab rio

guy's

when using ab rio . what is the physical layer of rio / blue hose ? i belive the protocol is a closed ab protocol correct ? i can not seem to find anything that describes the physical layer . LIKE AB DFI is a 232 physical layer . any info at all on rio i would be grateful to get

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Old December 6th, 2007, 09:24 AM   #2
rdrast
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Not knowing precisely, I'd imagine it's either just RS-485, or a modified version or RS-485.
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Old December 6th, 2007, 01:08 PM   #3
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the max nodes and distance it describes did not seem to line up with 485 ?
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