Hitachi IPJ.250n 2 way comm.

[runnerz]

Hi

We are having difficullities trying to get this interactive projector working with 2 way communication.
Sending commands work so we can turn it on/off and select source, but we would want the demopad program to sense if the projector is on or off while starting demopad.

we have configured the 2 way comm. with the right commands, and set actions to these. But we cant get it to work.

Example. (In Hercules)

Get status command: \xBE\xEF\x03\x06\x00\x19\xD3\x02\x00\x00\x60\x00\x00 -- This is set in the startup actions
Response: \x1D\x00\x00 (Power Off) -- This is set in the 2 way comm. with action to turn of "power ON" button in demopad.



Some info.

There is no password on the projector
Have tried with both LAN and RS232 (via converter)
Are able to get response from the projector via Hercules terminal
Have tried selecting the "Maintain connection"

Anyone got some ideas for this??? Help would be much appreciated

Stig Rune Moen
Meetcon AS
Norway

[cv27]

Either
1- The 2-way matching is not correct (response terminator, bad RegEx?), or
2- The 2-way is sending the command in a format that's not acceptable by the unit.

Try simulating a conversation between Hercules and DemoPad.

If you're not seeing any response from DemoPad in Hercules, then obviously there's work to be done on #1.

If you are seeing a response from DemoPad in Hercules, then it could be that the unit is not quite ready to accept a command (while it's doing its startup sequence); another issue might be timing: are you sending several commands to the unit and if so does it need some delay between commands?

[trevorst]

How do you simulate a conversation between Hercules and Demopad?
There has been several times I would have loved to have been able to do that.

[cv27]

How do you simulate a conversation between Hercules and Demopad?
There has been several times I would have loved to have been able to do that.

Replace the target device's IP with the one where Hercules is. But it's a step by step approach, so...

My preferred approach though is capturing the network conversation between the device and DemoPad (WireShark or other). This way, you get all of the exchange.

[DemoPad]

We managed to simulate this using the following feedback. Ensure that 'maintain active connection' is ticked, and 'disconnect after each command' is not ticked. The order of the rules below is important, this is a tricky one due to the \x00 response terminator.

2way.png