Hello,
Is there MODBUS RTU stack available for RA8M1 devices by any chance?
I found the following ticket on the forum.But I couldn't reach any sample for Modbus/RTU stack.community.renesas.com/.../modbus-for-ra4
Thanks,
Hello N,
Thanks for reaching out to Renesas! While we don't have a dedicated MODBUS RTU stack for the RA8M1, you can still implement MODBUS RTU communication by configuring the R_SCI_UART module to operate in RS485 mode and using an RS485 transceiver. This setup will enable you to handle MODBUS RTU communication effectively.
If you're also interested in MODBUS TCP, please refer to the following application note: https://www.renesas.com/en/document/scd/ek-ra8d1-modbus-tcp-quick-start-guide. It includes code for MODBUS TCP; while the high-level interface is similar to RTU, the physical layer differs. If you need any assistance with either configuration or have further questions, feel free to reach out.
Best Regards,
Payodhi
Hi Payodhi-san,
Thanks for reply.I was hoping to find "Renesas SynergyTm Platform".
I checked and it looks like the RL78 and RX72M have Modbus/RTU support. R01AN6896JJ0110 R01AN4862JJ0103
Which one would be suitable for porting to RA8M1?I think RL78 (R01AN6896JJ0110) would be good.I would appreciate your comments.