luamodbus documentation

[Thomas]

By standard response to write request contains exactly the same data. So any Luamodbus write function returns just true/false.

Does really readregister wait for this reply and read full answer? Not only number of bytes that were sent?
Because if I do this:

Code:

for index, value in ipairs(self.modbus_mapping) do
           local val,err=self.mb_aolan:writeregisters(value.register,write_val)
           if (val == nil) then
              -- here I do something with the error
             return
           end
         --os.sleep(0.1)
         os.sleep(0.05)
end

then with os.sleep lower than 0.05 I get err from the next write. Maybe it's error on the slave side but my first idea was I'm getting this error because I'm too fast and the counterpart is still sending data.

Can you please send me list of parameters for writereadregisters?

Thank you