i want read Holding registers rs485 Converter module master as esp32s3 salve is rs485 converter using modbus slave software.
try a web search for esp32 rs4385 - you will get plenty of link which should give you a start
also have a look at esp32-readings-with-wind-direction-sensor-via-rs485
read holding resisters from modbus slave software slave as well master using rs485 USB converter.
you need pc software for that.
try this free software for example:
not working this software i have to use Modbus poll for master & modbus Slave for slave .
it's urgent i want to fast reply
I can't figure out from you description what you are trying to accomplish.
Make a good description and a drawing of your setup.
I want read & write registers from slave as well master using Modbus poll & Modbus Slave software
i have to read values from Modbus Slave software error is insufficent bytes received at Modbus poll software please reply fast.
What makes You deserve better service then other members?
Please post code and schematics.
You opened new topic instead of posting necessary information about your setup.
Yeah
@Ushadussa, do not cross-post. Threads merged.
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i can't read input resistors value from slave using Modbus poll as master modbus Slave as slave i have used 2 USB RS-485 TTL converters
"I'm trying to read Holding Registers from an RS485 converter module. The master is an ESP32-S3, and the slave is the RS485 converter using Modbus slave software. Any advice on getting started with this setup would be appreciated!"
@alicemorgan33 Use Modbusmaster libarary
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