AN37: Box-2-Box Connection: Poseidon >> Damocles


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English version

 

Box-2-Box mode connects inputs and outputs between two different units without any software. Poseidon communicates with Damocles using SNMP traps and transfers changes at an input to a remote output.

Box-2-Box mode enables direct communication between two devices over a network, without any PC or software.

How to configure Box-2-Box connection from a Poseidon 3268 unit to a Damocles 1208 unit

  • Transfer of status using SNMP trap
  • Input is a contact or a sensor connected to any Poseidon or Damocles model
  • Output can be a relay or an open collector of any Damocles unit
  • Link between the controlling input and the controlled output is established by specifying the same "#01" string in the name of the input and the name of the output

Box-2-Box mode

  • How does it work:
    When a button connected to input XX is pressed, Poseidon sends a SNMP trap to output XX. Since the same "#01" string is specified in the text name of the input and of the output, Damocles sets the output Y according to the input Y.

 

Configuring the output: Damocles

What to configure Where Default / sample value
SNMP Port Listener Setup 162
Private community – write access Email & SNMP > SNMP Access true
Output name Outputs > O1 > Name Link#01
Output control Outputs > O1 Manual

Note

In a similar way, two Damocles units can be configured to work together. Damocles can serve as the input or as the output; Poseidon can only serve as the input.
CAUTION: If you use older models, upgrade their firmware first!

Configuring the input: Poseidon

What to configure Where Default / sample value
Where to send SNMP Traps SNMP > SNMP Trap Destination 162
Community private
IP address of the target device IP Address 192.168.68.70
Target device port for receiving SNMP Traps Port 162
Enable check
Input name Inputs  
Name Link#1
Alarm State Active if ON
Out of Safe Range SNMP Trap check

 

Note

In a similar way, two Damocles units can be configured to work together. Damocles can serve as the input or as the output; Poseidon can only serve as the input.
CAUTION: If you use older models, upgrade their firmware first!

Testing the function

  1. Turn both devices off, and then back on.
    No LEDs will be lit on the Damocles.
  2. On the Poseidon, close input 1 (a paper clip will work fine).
    Damocles reacts by closing output 2.

Note: In the Box-2-Box mode, SNMP traps only notify about changes. If you close the input before the Damocles is turned on, the state is not reflected.

Tips

  1. The link identifier, "#xx", must contain exactly two digits.
    #xx can be located anywhere in the name of the input or the output but it must not follow a space.
  2. An Input can control several units at once. The limit is the number of SNMP trap destinations (2 or 4).
  3. One input can control multiple outputs within a single output device.
    Assign the same link identifier to the outputs.
  4. The value of the input can be negated.
    If you use an exclamation mark operator (!) instead of the hash operator (#), the output will be inverted.
  5. Physical order of inputs and outputs is not important.
    Input1 can control Output8 and so on. It is only important to use the same link identifier.

Note: We recommend to use only US-ASCII characters in input and output names.

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