serial settings otg version 1 b

[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 ts4 port settings otg.PNG (16.47 KiB) Viewed 2105 times

db9torj45 otg (Mobile).jpg (59.18 KiB) Viewed 2104 times

[hvxl]

The db9 chassis is not connected to anything. You have to connect ground to db9 pin 5.

[labium]

i used this diagram

voor de vertaling van db9 naar rj45

digi rj45 to db9 serial.PNG (97.78 KiB) Viewed 2098 times

voor de betekenis van de kleuren van de draden

kleurcodering draden db9 rj45 converter.PNG (9.49 KiB) Viewed 2097 times

[hvxl]

So then connect rj45 pin 6 (SG, signal ground) to db9 pin 5.

[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.

[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