Monitoring Ness/ELK Alarm Zone Status

Monitoring Ness/ELK Alarm Zone Status - Printable Version

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Monitoring Ness/ELK Alarm Zone Status - jamesng - 12.02.2020

Hi

We run a Ness (aka ELK) DX16X alarm here which as an IP connection. The status reporting and control protocol is documented at the following link

http://www.nesscorporation.com/Software/Ness_D8-D16_ASCII_protocol.pdf

I can find integrations using this protocol for other platforms such as the following https://nessclient.readthedocs.io/en/latest/examples.html and https://community.home-assistant.io/t/ness-dx8-dx16-alarm/23285/163 but nothing for LogicMachine as yet.

I've started writing a script to connect the the system and can receive data ok, but need some help with getting the specific info and processing the responses in LUA.

Code:
socket = require("socket").tcp() 

  socket:connect('192.168.1.150', 2401) 

  socket:send(command .. '\n')

  res = socket:receive('*l')

  log('\nNESSCommand: ' .. command .. '\nNESSResponse : ' .. res)

Initially I'm interested in mapping the state of each zone back to objects in Logic Machine (after sending a status update command) from a resident script but haven't been able to figure out the protocol as yet.

Does anyone have a script that can do this? Initially the is the info that I'm keen to track

0/210/1 Sealed/Unsealed state of Zone 1
0/210/2 Sealed/Unsealed state of Zone 2
0/210/3 Sealed/Unsealed state of Zone 3
0/210/4 Sealed/Unsealed state of Zone 4
0/210/5 Sealed/Unsealed state of Zone 5
0/210/6 Sealed/Unsealed state of Zone 6
0/210/7 Sealed/Unsealed state of Zone 7
0/210/8 Sealed/Unsealed state of Zone 8
0/210/9 Sealed/Unsealed state of Zone 9
0/210/10 Sealed/Unsealed state of Zone 10
0/210/11 Sealed/Unsealed state of Zone 11
0/210/12 Sealed/Unsealed state of Zone 12
0/210/13 Sealed/Unsealed state of Zone 13
0/210/14 Sealed/Unsealed state of Zone 14
0/210/15 Sealed/Unsealed state of Zone 15
0/210/16 Sealed/Unsealed state of Zone 26

and also the overall state of the alarm

0/210/20 All Zones Ok - true/false
0/210/30 Armed State - Disarmed (0), Fully armed (1), Partially armed (2)
0/210/40 Alarm Sounding - true/false

Many thanks in advance

Kind Regards
James

RE: Monitoring Ness/ELK Alarm Zone Status - admin - 14.02.2020

The protocol is rather simple, here's a starter example that you can use to decode data further:

Code:
res = socket:receive('*l')

if res then

  data = lmcore.hextostr(res, true)

  st, addr, len, cmd, event, id, area = data:byte(1, 7)

  log(st, addr, len, cmd, event, id, area)

end

Note that the logged event number will be in decimal whereas it is written in hexadecimal in the protocol description.

RE: Monitoring Ness/ELK Alarm Zone Status - jamesng - 15.02.2020

Many thanks for the starter example. I'm still struggling a bit.

Here's an example of the data I'm receiving with the above after connecting to the alarm panel

* arg: 1
* number: 135
* arg: 2
* number: 0
* arg: 3
* number: 131
* arg: 4
* number: 97
* arg: 5
* number: 1
* arg: 6
* number: 7
* arg: 7
* number: 0

Am I correct in my interpretation that this would map to a sensor in zone / 1D 7 being triggered (event id = 1)?

Also how would I formulate an input command to retrieve the status of all 16 zones to update the group addresses in LM?

Many thanks in advance

Kind Regards
James