SPRUJ06 October 2021
Affected PCB version: E1
Board Modification Sticker: M1
Severity: High
The original design of the IO Link breakout board resulted in occasional voltage spikes on the TX line of the transceiver. A fix was implemented by rotating transistors Q4, Q5, Q6, Q7, Q8, Q9, Q10 and Q11 and adding a diode in line with Pin 1 of the transistor.
This Mod was applied to all boards shipped with a 1st revision PCB.