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AN37: Box-2-Box Connection: Poseidon >> Damocles
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
- 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
- Turn both devices off, and then back on.
No LEDs will be lit on the Damocles.
- 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
- 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.
- An Input can control several units at once. The limit is the number of SNMP trap destinations (2 or 4).
- One input can control multiple outputs within a single output device.
Assign the same link identifier to the outputs.
- 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.
- 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.
Related products and links
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