frame repetition

If后要接end

If后要接end 发表于 2022-9-26 19:08
You can test with this routine with modbus slave

Continuously read the same register data, in order to ensure that the previous command screen judges that there is data returned, you can send the second command after reading the first command successfully, instead of sending two identical commands continuously.

If后要接end

If后要接end 发表于 2022-9-26 19:08
You can test with this routine with modbus slave

In addition, the timeout time of the screen can be set to 1 second, because the timeout starts from the command sending, and all the commands returned by the slave device are received by the screen. Setting the screen timeout too short will also easily result in nil being returned

terefere

Could u send me your email?.

I made long post with RS485 log but I cannot send it- still get this
info

抱歉，您填写的内容包含不良信息而无法提交

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finally I send everything to export@gz. Pls ask in office for email with "freame coliision" in title.

terefere

Second problem fixed. Real reason is that slave after respond keep several ms RS485 line as transmitter. It's not Dacai fault. Thanks for help