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).
I try to send this Hex Command:
0x7B 0x4D 0x43 0x00 0x04 0x1F 0x0a 0x08 0x00 0x0d 0x7D
But i don´t get an Answer, i sent it via String.
Sorry but i´m new and just begin to learn.
I hope some one understand my terrible Englisch an can help me