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Notes on the documentation

20 CX50x0 - Hardware Documentation

The tRecoverTime needs to be a little bit bigger than the maximum holding time of the UPS,

since the UPS will shut off even if the power supply is restored.

VAR_OUTPUT

bPowerFailDetect : BOOL; (* TRUE while powerfailure is detected *)

eState : E_S_UPS_State; (* current ups state *)

END_VAR

bPowerFailDetect : TRUE if a power failure is detected; FALSE if the power supply is sufficiant.

eState : internal state of the function block, for the values see E_S_UPS_State.

VAR_GLOBAL

eGlobalSUpsState : E_S_UPS_State; (* current ups state *)

END_VAR

eGlobalUpsState : internal state of the function block as a global copy of eState, for the values see

E_S_UPS_State.

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