ActiGRAF Help : MASTER25 Frequency Input Description

Frequency Input can operate in two different Mode edit by the parameter "Mode" :

- Logical Input : input used in logical mode.
- Frequency Input: Frequency Input is used.

### 1 - Logical Mode

##### 1-1 - Parameters Description

Except the Mode parameter, there is no other configuration needed for the input in logical mode.

##### 1-2 - Mnemonics Description

The mnemonics names for ECU IO must applies a set of rules more details.

Mnemonic | STraToN Type | Description
--- | --- | ---
Input Boo | BOOL | Indicate the status of the input it is set to 1 when the input is active and reset to 0 when it is inactive. The status evolution is shown in the following hysteresis where: V1 and V2 are threshold values set by manufacturing parameters. using High side or Low Side is set by manufacturing parameter.
- For HS configuration :
- For LS configuration :
Equipment | BOOL | To manage the Fault detection ( more details ).

### 2 - Frequency Mode

##### 2-1 - Parameters Description

Parameter | Description
--- | ---
Time Out | Defines the nominal period to declare a input time out.

##### 2-2 - Mnemonics Description

The mnemonics names for ECU IO must applies a set of rules more details.

Mnemonic | STraToN Type | Description
--- | --- | ---
Input_Freq_OFF | WORD | The Data TOFF_FREQx value is updated with the OFF state duration measurement, the value unit is 1 µs. This is a double word variable, it must apply to the double word rule see variable rules.
Input_Freq_ON | WORD | The Data TON_FREQx value is updated with the ON state duration measurement, the value unit is 1 µs. This is a double word variable, it must apply to the double word rule see variable rules.
Fault | BOOL | Indicates Fault detection.
Equipment | BOOL | To manage the Fault detection ( more details ).

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