I have been running an F1616 plc for many years, and in recent years, occasionally (every 3-6 months) the plc locks up.
Please see attached screenshot for the error message, Run time error in function #6, DM32 out of range, with the LCD pointing me to line 033B in function 6, which has been commented out. I suspect my firmware version 71 is too old to implement intrdef 100,n,1
If I were to return it, could you check for a hardware fault, and then upgrade this old PLC to the latest firmware?
I would consider also returning two nano-10 r75 plcs in the same package for upgrading to upgradable firmware.
William