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+--- Thread: Integrate Noark 1F electricity meter and write to M-Bus to change tariff (/showthread.php?tid=5038)
Integrate Noark 1F electricity meter and write to M-Bus to change tariff - fleeceable - 17.10.2023
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/showthread.php?tid=365&highlight=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/54033eef-8adf-4961-b4d7-60718e87c62c/user_manual_ems_1p_1m_en.pdf
RE: Integrate Noark 1F electricity meter and write to M-Bus to change tariff - admin - 18.10.2023
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()RE: Integrate Noark 1F electricity meter and write to M-Bus to change tariff - fleeceable - 19.10.2023
Thanks!
Gonna try it