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#1
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RS485
Hello,
I need to connect some units with RS485 and in the user guide I have found the following text regarding the cable to use: "Wire gauge size is thicker than AWG #22 (0.33 mm2)." I wonder what "AWG" is, is this a kind of a cable or specification? Best Regards E |
#2
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AWG = American Wire Gauge, and RS485 should use twisted pair cable. Each
end should be terminated with a 120 ohm resistor (not each node, each end). Tom Woodrow Erik Janssen wrote: Hello, I need to connect some units with RS485 and in the user guide I have found the following text regarding the cable to use: "Wire gauge size is thicker than AWG #22 (0.33 mm2)." I wonder what "AWG" is, is this a kind of a cable or specification? Best Regards E |
#3
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Hello,
If I understand correctly, what I need is twisted pair cable with a minimum size of 0.33mm2? Best Regards E "Tom Woodrow" skrev i melding news:PBKqd.118208$5K2.72837@attbi_s03... AWG = American Wire Gauge, and RS485 should use twisted pair cable. Each end should be terminated with a 120 ohm resistor (not each node, each end). Tom Woodrow Erik Janssen wrote: Hello, I need to connect some units with RS485 and in the user guide I have found the following text regarding the cable to use: "Wire gauge size is thicker than AWG #22 (0.33 mm2)." I wonder what "AWG" is, is this a kind of a cable or specification? Best Regards E |
#4
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Erik Janssen wrote:
I need to connect some units with RS485 and in the user guide I have found the following text regarding the cable to use: "Wire gauge size is thicker than AWG #22 (0.33 mm2)." I wonder what "AWG" is, is this a kind of a cable or specification? American Wire Gauge. That sounds like a fairly large wire size to use, I would expect 24 or even 26 to be adequate for the purpose. -- Chuck F ) ) Available for consulting/temporary embedded and systems. http://cbfalconer.home.att.net USE worldnet address! |
#5
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Depends on the total length of the run.
CBFalconer wrote: Erik Janssen wrote: I need to connect some units with RS485 and in the user guide I have found the following text regarding the cable to use: "Wire gauge size is thicker than AWG #22 (0.33 mm2)." I wonder what "AWG" is, is this a kind of a cable or specification? American Wire Gauge. That sounds like a fairly large wire size to use, I would expect 24 or even 26 to be adequate for the purpose. |
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