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RS232C wiring |
Neil Walker
Member #210
April 2000
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Hello, {"name":"604109","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/d\/a\/da680c83106a53cb478067448a2b3b5d.png","w":766,"h":428,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/d\/a\/da680c83106a53cb478067448a2b3b5d"} Neil. wii:0356-1384-6687-2022, kart:3308-4806-6002. XBOX:chucklepie |
Don Freeman
Member #5,110
October 2004
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Pin 1 and pin 7 are both grounds. Explains it. If it's a 9-pin connection, use this. -- |
Neil Walker
Member #210
April 2000
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That diagram only has one end (and 7 is only ground in 25 pin, I've got 9 at both ends). I know what the pins are, I just cannot figure out what they are doing in the diagram I showed (which is from the manual) as this isn't a cross-over but neither is it straight through. Neil. wii:0356-1384-6687-2022, kart:3308-4806-6002. XBOX:chucklepie |
Don Freeman
Member #5,110
October 2004
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It is clearly a db9 layout. I would match the signal name to those on the db9 pinout i gave you. I wouldn't go by their diagram directly. They have the TX data and RX data backwards as well. I would imagine that you are correct in assuming pins 7 and 1 are miss labeled. You don't have a cable for it laying around that you could "modify" or dissect? -- |
Dizzy Egg
Member #10,824
March 2009
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I use a lot of RS232 in my j0rb, and usually pins 2-3 are crossed, with 5 straight through as ground; null-modem stylee, don't know if that helps though.
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Thomas Fjellstrom
Member #476
June 2000
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you never really know with some serial devices, they may have intentionally swapped some pins. My ups is like that, nut cant understand the ups at all without modifying a cable, and even then it still cant communicat reliably. -- |
Neil Walker
Member #210
April 2000
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Well, I found a M-F 9 9-pin cable in a drawer at work, which had probably been there for 10 years, never checked the pin-outs and after plugging it in the device worked perfectly on COM1 So essentially I suspect the USB-Serial device driver just sucked. Neil. wii:0356-1384-6687-2022, kart:3308-4806-6002. XBOX:chucklepie |
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