Communication of JBC soldering stations with fume extractor

[gleitmo]

Hello everyone
Is there a source of information about the communication protocol between JBC soldering stations and their fume extractor units?

I have read that usually in dedicated soldering station sockets, the source of the signal to the extractor unit are potential-free contacts. However, on the FAE/AUX output of my JBC station (6-pin RJ12 connector) I have recorded such a data frame (attached screenshot), which is generated periodically.

Since the soldering station does not communicate with the fume extractor unit using a simple potential-free contact, I am looking for information with the specification of pinout of this connector and protocol. Thanks in advance for your help.

[schirmi]

Hi
I would also be interested in this information.

I opened my jbc CD-Station today and found out, that inside is an analog devices adm3251e RS232-isolator.
The pinout is the same as for their RJ12 robot communication port:
Pin 1 and 6 are NC, 2 and 5 are GND, Pin 3 is Tx and 4 is Rx

The communciation is RS232 with 8 data bits, 1 stop bit, odd parity, LSB first and it seems to be 250K baud.

The soldering station only sends a periodic signal at 20ms intervals and it is always the same, removing the tool from the stand does not change it.

The message seems to be:
HEX:     0x10, 0x02, 0x10, 0x10, 0x11, 0xFD, 0x00, 0x01, 0x11, 0xED, 0x10, 0x03
ASCII:   DLE, STX, DLE, DLE, DC1, ý, NUL, SOH, DC1, í, DLE, ETX

The STX and ETX are similar to their robot communication stuff, not sure what the rest is.

So we would need someone who has access to a jbc fume extractor and a CD soldering station and sniff the communication between the two.
As the fume extractor most likely needs to send a message to receive the tool status.