Split from: CAREL protocol specifications

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#1
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I have an IR33 Carel controller and I am trying to send the following commands to it.

 

02 31 3f 03 37 35 --> all in hex.

Controller responds with 00 only.

This is at 19200, no parity one stop bit. I am thinking the on board 4 pin header is actually UART lines. i measure and I see both pins are pulled up high.

I am not using the RS485 IROPZ48500 adaptor. I am interfacing direct to the controller using a USB to UART coverter plug.

 

Am i sending the correct commands? Or IROPZ48500 sends entirely different frame altogether?

 

Last Edited: Wed. Jan 24, 2018 - 03:09 AM
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So - have you contacted Carel ?

Top Tips:

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Now i’ve gotta get used to not communicating with Carel.

Carel? Carel?

Last Edited: Wed. Jan 24, 2018 - 11:46 AM
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Yeah did not contact Carel. I am pretty sure they wont respond and instead will tell me to buy their serial dongle instead....I m very sure its the dongle is not doing anything intelligent...