The process for updating firmware on devices like the 3RT841B typically involves:
First, a critical clarification: The base 3RT841B is a size S3 or S6 contactor (depending on the exact suffix), which is an electromechanical device. It does not contain microprocessor-controlled firmware in the traditional sense. 3rt841b firmware 2021
However, the confusion arises because:
For the context of 2021, the most relevant firmware updates applied to the 3RB3 overload relay and any integrated AS-Interface or IO-Link communication stacks. The process for updating firmware on devices like
Cause: The 2021 firmware has tighter watchdog tolerance.
Fix: Increase the watchdog factor in your PLC’s device configuration from 3 to 5 or 6. This gives more headroom for network jitter. For the context of 2021 , the most