serial settings otg version 1 b

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labium
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serial settings otg version 1 b

Post by labium »

i unpacked my assembled opentherm gateway ordered in 2012 , i cant get serial communication. . i use a digi port server ts4 with rj45 pin 4 to db9 pin 2 (red wire) pin 5 to pin 3 db9 ground (black) to chassis db9
digi serial port settings
digi serial port settings
digi ts4 port settings otg.PNG (16.47 KiB) Viewed 4357 times
db9torj45 otg (Mobile).jpg
db9torj45 otg (Mobile).jpg (59.18 KiB) Viewed 4356 times
hvxl
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Re: serial settings otg version 1 b

Post by hvxl »

The db9 chassis is not connected to anything. You have to connect ground to db9 pin 5.
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labium
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Re: serial settings otg version 1 b

Post by labium »

i used this diagram
voor de vertaling van db9 naar rj45
voor de vertaling van db9 naar rj45
digi rj45 to db9 serial.PNG (97.78 KiB) Viewed 4350 times
voor de betekenis van de kleuren van de draden
voor de betekenis van de kleuren van de draden
kleurcodering draden db9 rj45 converter.PNG (9.49 KiB) Viewed 4349 times
hvxl
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Re: serial settings otg version 1 b

Post by hvxl »

So then connect rj45 pin 6 (SG, signal ground) to db9 pin 5.
Schelte
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Re: serial settings otg version 1 b

Post by hvxl »

I also believe you have the red and green wire the wrong way around. If I understand the pictures correctly, red is TxD from the digi port server. That should be connected to RxD of the OTGW, which is db9 pin 3. Green is RxD on the digi port server. That must be connected to TxD of the OTGW, db9 pin 2.
Schelte
labium
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Re: serial settings otg version 1 b

Post by labium »

hvxl you are correct changing the red and green wire works with th yellow rj45 pin 6 wire in the db9 pin 5.

thanks
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