Integrate Noark 1F electricity meter and write to M-Bus to change tariff

[fleeceable]

Hello!

I checked M-Bus manual and this thread but didn't find any information...
https://openrb.com/m-bus-integration-in-lm
https://openrb.com/docs/mbus.htm
https://forum.logicmachine.net/showthrea...light=mbus

We have about 185 Noark EMS 1P 1M electricity meters. Plan is to integrate these to LM using Techbase TB-MBUS-200-RS232 converter.

Is it possible to send custom M-Bus packet to change tariff? Noark one phase electricity meters allow to change tariff only using M-Bus write command.  

Here is electricity meter manual (page 17 and 20):
https://cdn.noark-electric.eu/documents/..._1m_en.pdf

[admin]

Try this, make sure that only one script is accessing the serial port at any time moment.

Code:

require('serial') port, err = serial.open('/dev/RS232', {   baudrate = 9600,   parity = 'even',   duplex = 'full', }) port:flush() addr = 0x01 -- short address tariff = 0x02 -- selected tariff data = { 0x53, addr, 0x51, 0x09, 0x7C, 0x01, 0x54, tariff } len = #data buf = { 0x68, len, len, 0x68 } cs = 0 for _, char in ipairs(data) do   buf[ #buf + 1 ] = char   cs = cs + char end buf[ #buf + 1 ] = bit.band(cs, 0xFF) buf[ #buf + 1 ] = 0x16 data = string.char(unpack(buf)) port:write(data) res = port:read(1, 0.5) if res then   if res:byte(1) == 0xE5 then     log('write ok')   else     log('reply error')   end else   log('no reply') end port:close()

[fleeceable]

Thanks!
Gonna try it