LM Lutron telnet listener - Printable Version

LM Lutron telnet listener - Printable Version

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+--- Thread: LM Lutron telnet listener (/showthread.php?tid=414)

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LM Lutron telnet listener - AEK - 06.10.2016

hello everyone!!

I made function (with Admin's big help), which will show you what Lutron send by telnet
I have lutron Homework QS

create user libruary "lutron"

Code:
local socket = require("socket")

local user = 'default'
local password = 'default'
 
function lutron_connect()
    local tcp = assert(socket.tcp())
  tcp:settimeout(31)
    local res, err = tcp:connect('192.168.0.105', 23) 
  if res then
    return tcp
  else
    tcp:close()
    return nil, err
  end
end

function lutron_login()
  local tcp, tcp_err = lutron_connect()
  if not tcp then
    return nil,  tcp_err
  end
  tcp:receive(7)
  tcp:send(user..'\r\n')
    tcp:receive(10)
  tcp:send(password..'\r\n')
  local res = tcp:receive(9)
  if res == nil or res == 'bad login' then 
    tcp:close()
    return nil, res
  end
  return tcp
end
  
function lutron_receive(tcp)
 res, err = tcp:receive()
  if not res then
    tcp:close()
    return nil, err
  end
  return res
end

and resident script

Code:
require('user.lutron')
  
tcp, err = lutron_login()
if not tcp then
  log('no connection to device', err)
end 
while tcp do
  res, err = lutron_receive(tcp)
  log(res,err)
    if (res == nil) then
      return
    end
end

RE: LM Lutron telnet listener - AEK - 12.10.2016

some additions for that case
Lutron message parser
For example I shall show you how to receive setpoint temperature from Lutron panel/switch
Let’s write all messages from Lutron to knx group address
Change resident script

Code:
require('user.lutron')
  
tcp, err = lutron_login()
if not tcp then
  log('no connection to device', err)
end 
while tcp do
  res, err = lutron_receive(tcp)
  --log(res,err)
    if (res == nil) then
      return
    else
      grp.write('15/1/1', res)
    end
end

From Lutron we receive a lot of messages when we change setpoint
For example, this 4 message we will receive twice, when we will change setpoint:
~HVAC,11,78,26,26 – i dont know what is it
~HVAC,11,18,79,0,0 – setpoint in Fahrenheit
~HVAC,11,19,26,0,0 -- setpoint in Celsius degree
~HVAC,11,10,26,26 -- i dont know what is it

Let’s see, what we have in setpoint in Celsius degree
~HVAC,11,19,26,0,0
~HVAC – status from device
11 – device id, which send this message
19 – type of information (Celsius degree in this example)
26 - Celsius degree
0,0 – some other parameters
To parse this message and write temperature to knx address create event based script for message group address (15/1/1)

Code:
--lutron parser
-- get string
temp = event.getvalue()
-- convert sting to table
temp = string.split(temp, ',')
-- if comand type is ~HVAC let's move forward
if temp[1] == '~HVAC' then
    -- if device id = id of our panel let's move forward
    if temp[2] == '11' then -- be carefull, temp[2] is string, not number
        -- if in message is celsius degree
        if temp[3] == '19' then
            -- convert temperature from string to number
            temp = tonumber(temp[4])
            -- check current value of setpoint, to not to write the same value
            cur_temp = grp.getvalue('lutron_temp_setpoint')
            if temp~=cur_temp then
                -- write walue to temp address
                grp.write('lutron_temp_setpoint', temp)
            end
        end
    end
end

To write value from LM to Lutron create event script for setpoint object

Code:
require('user.lutron')
value = event.getvalue()
-- round setmoint to integer
value = math.floor(value)  
tcp, err = lutron_login()
if not tcp then
  log('no connection to device', err)
end 
tcp:send('#HVAC,11,19,'..value..',0,0\r\n')

to read some data from lutron use next script (resident in my case)

Code:
require('user.lutron')

--Подключаемся и делаем запрос
tcp, err = lutron_login()
if not tcp then
  log('no connection to device', err)
else
  -- send some request
  tcp:send('?HVAC,11,15\r\n')
  -- and receive answer
  x = tcp:receive()
  -- log answer, or write it to message address
  log(x)
  tcp:close()
end

RE: LM Lutron telnet listener - Erwin van der Zwart - 12.10.2016

Hi AEK,

We did this Lutron link 2 years ago on a big project.

Keep in mind to send a telegam once every x period otherwise the TCP connection will be closed (after 12 hours i believe) by Lutron.

We included a mechanisme to request date or time every hour from the Lutron server to keep the connection alive.

BR,

Erwin

RE: LM Lutron telnet listener - AEK - 13.10.2016

(12.10.2016, 14:15)Erwin van der Zwart Wrote: Hi AEK,

We did this Lutron link 2 years ago on a big project.

Keep in mind to send a telegam once every x period otherwise the TCP connection will be closed (after 12 hours i believe) by Lutron.

We included a mechanisme to request date or time every hour from the Lutron server to keep the connection alive.

BR,

Erwin

Hi, Erwin!
thanks for your advice.
there will be request of current temperature every N minutes in our case, so I think there will be no problem.

if you did this 2 years ago, could you post your code here to?
I'm not programmer, so i understand my code only partially Smile

RE: LM Lutron telnet listener - Domoticatorino - 02.02.2017

Hi Erwin,
is it possible to have some suggestion about Lutron integration? In the next week I will have to integrate it.
Let me know if it could be possible.
Thanks.

RE: LM Lutron telnet listener - imprashant - 14.11.2022

(02.02.2017, 17:44)Domoticatorino Wrote: Hi Erwin,
is it possible to have some suggestion about Lutron integration? In the next week I will have to integrate it.
Let me know if it could be possible.
Thanks.

I am integrating knx keypad and lutron controller using Logic Machine, I am able to send command but how do I get the status message from lutron please help.

RE: LM Lutron telnet listener - admin - 14.11.2022

What kind of status do you want to get? Do you already know the required status request message that should be sent to Lutron?

RE: LM Lutron telnet listener - imprashant - 20.11.2022

(14.11.2022, 16:36)admin Wrote: What kind of status do you want to get? Do you already know the required status request message that should be sent to Lutron?

I just want to get On/off status and brightness value. No, how to send the required status to lutron? Please guide.

RE: LM Lutron telnet listener - admin - 21.11.2022

Which commands are you using for control? The status command is similar but it begins with ? instead of # and the last parameter (value) is skipped. This example parses HVAC query: https://forum.logicmachine.net/showthread.php?tid=414&pid=2197#pid2197
You will need a separate resident script for status queries.

RE: LM Lutron telnet listener - imprashant - 22.11.2022

(21.11.2022, 08:12)admin Wrote: Which commands are you using for control? The status command is similar but it begins with ? instead of # and the last parameter (value) is skipped. This example parses HVAC query: https://forum.logicmachine.net/showthread.php?tid=414&pid=2197#pid2197
You will need a separate resident script for status queries.

I am using this event based script to send command, can you please share the resident script for the same.

require('user.lutron')
tcp, err = lutron_login()
if not tcp then
log('no connection to device', err)
end
tcp Confused

end('#DEVICE,10,6,3\r\n')

RE: LM Lutron telnet listener - admin - 22.11.2022

Try this, no guarantees that it will work because we don't have any Lutron devices to test. Check Logs for any errors if the script does not work.
Adjust each query call as needed. First argument is the query request (without \r\n, it's added automatically), second argument is the status group address where the new value is written.

Code:
require('user.lutron')

sock, err = lutron_login()
if not sock then
  log('no connection to device', err)
  os.sleep(5)
end

function close(err)
  sock:close()
  sock = nil

  log('receive failed', err)
end

function query(req, out)
  if not sock then
    return
  end

  sock:send(req .. '\r\n')
  local res, err = sock:receive()

  if not res then
    return close(err)
  end

  if res:sub(1, 1) ~= '~' then
    return close('invalid reply ' .. res)
  end

  if res:sub(2, #req) ~= req:sub(2) then
    return close('invalid reply ' .. res)
  end

  local val = res:sub(#req + 2)
  val = tonumber(val)

  if val then
    grp.checkupdate(out, val)
  end
end

while sock do
  query('?DEVICE,10,6,3', '1/1/1')
  query('?DEVICE,10,1,2', '1/1/2')
  query('?DEVICE,10,3,4', '1/1/3')

  if sock then
    os.sleep(5) -- delay between each poll cycle
  else
    break
  end
end