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Hiromi

Plug-in (# TALT +) RS232C

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Can I connect PC-Link to RS232c?
If possible, how is exclusive use with USB performed?
What kind of connection is made inside the ECU?

We plan to use RS232c and USB as needed.

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Yes you can connect via RS232 but you can only use one at a time - you cant use USB and RS232 together at the same time.  Also if a long RS232 cable is left connected to the ECU even when not in use then the USB connection will not work - the capacitance of the serial cable will interupt the USB so you need to completely unplug the RS232 cable when not in use.

RS232 is available on the CAN1/RS232 socket.  Pinout like this:

I9ir0Bm.png

oEhVrIw.png

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Thank you!

Is the GND of RS232 and GND of the expansion connector common?
How many mA can be supplied to + 5V of the expansion connector?

I'm thinking of running RS232 devices with the + 5V expansion connector.

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