F&F LE-03MQ Modbus energy counter

[morak]

I've changed the connection to serial and also I've tried connect terminators 120ohm on the start and at the end of the bus and still there are a lot of timeouts. Now I've connected this only energy meter to the RS-485-2 (very short distance ~5m) and I am trying read values from it via resident script but also there are a lot of timeouts How can I change timeout of every request on resident script?

This is what I am using now for testing:

Code:

require('luamodbus') mb = luamodbus.rtu() mb:open('/dev/RS485-2', 9600, 'N', 8, 1, 'H') mb:connect() mb:setslave(4) -- L1 - N -- read 32-bit floating point value from input register nr 123, use word swap res, err = mb:readinputregistervalue(0, "float32", "w") log(res, err) -- L2 - N res, err = mb:readinputregistervalue(2, "float32", "w") log(res, err) -- L3 - N res, err = mb:readinputregistervalue(4, "float32", "w") log(res, err) mb:close()

Hi 
What happen when you read only 1 registry? 
What kind of cable do you use? 
Which LM is it?
BR