Hi,
okay, cableing sounds good so far.
Honestly spoken, I’m running out of ideas what to try next.
If switching mode away from 0x00, for example 0x01, how do the LEDs on the PLC and on the PS9500 look like, which LEDs are on, which color, any LEDs blinking? (please wait some seconds after powering on, some blinking / flashing while booting is normal).
Additionally not in boot mode, you could try some “probing” for the serial parameters like described in this post:
I don’t think that an update is neccessary, runtime D2.33 should be fine.
But sure, you could try using AS 3.0.90.37 which was the last version and still can be downloaded from the B&R website:
https://www.br-automation.com/en/downloads/software/automation-studio/automation-studio-3090/automation-studio-v3090/
Best regards!