Symptoms
The 'readPowerSupplyRegister error' is logged in LTM log when DC PSU loses its power.
Impact
The 'readPowerSupplyRegister error' messages occur because PSU data is not available without power. When the system is in this state, you can safely ignore these messages.
Conditions
When a DC powered PSU loses its power, the system logs 'readPowerSupplyRegister error' messages in the LTM log. This occurs because PSU data is not available without power.
Workaround
None. You can safely ignore this error message in this case.