LGF_ClockGen (FB / 1.0.1)

Author: Simatic Systems Support (SICAR)

Short description

This function generates the same clock signals as the system clock memory.

Block Interface

		LGF_ClockGen (FB)
					clockDataType			LGF_typeSystemClockGen
					clockDataType			LGF_typeSystemClockGen
					clockDataTypeRisingEdge			LGF_typeSystemClockGen
					clockDataTypeRisingEdge			LGF_typeSystemClockGen
					clockDataTypeFallingEdge			LGF_typeSystemClockGen
					clockDataTypeFallingEdge			LGF_typeSystemClockGen
					clockByte			Byte
					clockByte			Byte
					clockByteRisingEdge			Byte
					clockByteRisingEdge			Byte
					clockByteFallingEdge			Byte
					clockByteFallingEdge			Byte
					clk10Hz			Bool
					clk10Hz			Bool
					clk5Hz			Bool
					clk5Hz			Bool
					clk2Hz5			Bool
					clk2Hz5			Bool
					clk2Hz			Bool
					clk2Hz			Bool
					clk1Hz25			Bool
					clk1Hz25			Bool
					clk1Hz			Bool
					clk1Hz			Bool
					clk0Hz625			Bool
					clk0Hz625			Bool
					clk0Hz5			Bool
					clk0Hz5			Bool

Output parameter

Identifier	Data type	Description
clockDataType	LGF_typeSystemClockGen	Clock data type
clockDataTypeRisingEdge	LGF_typeSystemClockGen	Clock edge data type (rising edges)
clockDataTypeFallingEdge	LGF_typeSystemClockGen	Clock edge data type (falling edges)
clockByte	Byte	Clock byte
clockByteRisingEdge	Byte	Clock edge byte (rising edges)
clockByteFallingEdge	Byte	Clock edge byte (falling edges)
clk10Hz	Bool	Clock bit 10Hz
clk5Hz	Bool	Clock bit 5Hz
clk2Hz5	Bool	Clock bit 2.5Hz
clk2Hz	Bool	Clock bit 2Hz
clk1Hz25	Bool	Clock bit 1.25Hz
clk1Hz	Bool	Clock bit 1Hz
clk0Hz625	Bool	Clock bit 0.625Hz
clk0Hz5	Bool	Clock bit 0.5Hz

User defined datatype(s)

LGF_typeSystemClockGen (UDT / V1.0.0)

Clock generator datatype

Identifier	Data type	Default value	Description
clk10Hz	Bool	FALSE	Clock bit 10Hz
clk5Hz	Bool	FALSE	Clock bit 5Hz
clk2Hz5	Bool	FALSE	Clock bit 2.5Hz
clk2Hz	Bool	FALSE	Clock bit 2Hz
clk1Hz25	Bool	FALSE	Clock bit 1.25Hz
clk1Hz	Bool	FALSE	Clock bit 1Hz
clk0Hz625	Bool	FALSE	Clock bit 0.625Hz
clk0Hz5	Bool	FALSE	Clock bit 0.5Hz

Functional description

The module generates the clock flags known from the system. It uses the system function Runtime and calculates the clock flag states based on the time.

The function block outputs the clocks in three formats:

Individual Boolean values
Clock byte
Clock data type

In addition, the edges (rising and falling edges) are also evaluated and output as bytes and data structure.

Change log

Version & Date		Change description
	1.0.0	SICAR
	01.10.2023	First released version
	1.0.1	Simatic Systems Support
	06.05.2025	Integration into LGF