For a reason I cannot explain the new unit has started to connect
using the FTDI adaptor, with RX & TX inverted, see snap attached
output level is 5v active high at the PCAN-LIN RX line
The existing units with a configuration already inside will not connect.
I'll try again with a 12v data signal and let you know how I get on
- using utility 'FT Prog'
- FTDI inverted.JPG (56.75 KiB) Viewed 4302 times
- PCAN-LIN connected.JPG (72.04 KiB) Viewed 4302 times
5v signal from adaptor TX line converted to 12v
snap one shows 12v level pulses on the line when PCAN-LIN unit NOT connected
snap two shows this signal being reduced (clamped internally) when PCAN-LIN unit IS connected.
So at the moment, i can connect to new unit but not units previously used i.e. have a .pclin configuration installed and units running, indicated by blinking LED's
Any ideas as to how to access these units greatly appreciated.
- 12v pulses, PCAN-LIN unplugged
- snap1 12v.jpg (79.35 KiB) Viewed 4301 times
- 5v pulses, PCAN-LIN connected
- snap2 5v.jpg (53.09 KiB) Viewed 4301 times
a RS232 interface uses positive and negative voltages. So please use an USB2Serial module, as linked in my previous post. This will work out of the box.
BTW: we also offer a USB-RS232 Adapter (FDTI Chip Version), ordering number: IPFH-000101, price 18.-Euro (not available in the webshop, but can be ordered by email)
We are now able to reliably connect to a new unit and a 'previously used' unit.
I'm accepting that one unit I have done a lot of testing with now seems to be faulty.
I'm happy to now call this issue 'closed'.
Thank you for your assistance and patience.
We got there eventually
thanks for the feedback. It will also be possible to repair the defective PCAN-LIN device. Contact us by email (support@) to discuss all further details.