M-BUS Transceiver

rajni rajpoot

Prodigy 20 points

Other Parts Discussed in Thread: TSS721A

I am using Tss721A MBUS Transceiver as a slave but i dint get proper data which i had send from master......

can anybody please help me regarding this and please share some application notes if available..........

over 13 years ago

0 Jens-Michael Gross over 13 years ago

Guru 227245 points

rajni rajpoot said:
can anybody please help me regarding this

If I knew what you are doing, maybe I could tell you what you're doing wrong. But I know neither the schematics not the code oyu're using (or whether you use an MSP at all, and if, which one). And my crystal ball is still away for maintenance. So sorry, no help possible.

0 rajni rajpoot over 13 years ago in reply to Jens-Michael Gross

Prodigy 20 points

The circuit we are using is given above

0 Jens-Michael Gross over 13 years ago in reply to rajni rajpoot

Guru 227245 points

It's possile that you need to use the RX and TX pins rather than RXI and TXI. I'm not sure whether the MBUS idle line is mark or space. The drawing in the datasheet is ambiguous.

Check the TX pin, it should be high (VCC) while not transfer is active.

**Attention** This is a public forum

MSP low-power microcontrollers

MSP low-power microcontroller forum

M-BUS Transceiver