i´m trying to read out my Central Heating.
It have an RS232 port and i will send an Command over Node-red (based on IoBroker), over a Usr-TCP232 (Serial Port converter).
sorry i cant upload the complet .pdf.
i use an example massage from a other hompage, witch i found.
But he scribe his Code in C+.
Could i post a link or is it unwanted in hear?
But it locks like nothing is sendet if i send request in binary mode.
Only if i click on the ... the paylode is then morpht and it locks like on Debug and USR (web interface) it is sendet.
Injects with "slash", wouldn't be send, debug log "undefined".
I read in a other tread, that it should be type like "0x7B",
But my heater never response.
@dceejay maybe you are right and my code is to long
The datasheet is not clear for me, because its new for me.
I try to contact the Heater Company next week, maybe they can help me.
Hi
the answer to my problem was not only how to send the command in the right way like:
I used a wrong hardware.
At first i took a Serial cable like i read in the Dokument of the heater Company,
but they changed an internal extension cable.
So i have to take an crossed cabel.
No i get Answers from my Heater over USR-TCP232-302.
Thx for all your help and Tips, i hope it helps other People too.