Equipments (Devices) > PLC200 > Program > Data Transfer

Block that gets the recipe from a recipe file and sends it to a variable.

Ladder Representation

READRECIPE_block

Block Structure

Variable Type	Name	Data Type	Description
VAR_INPUT	Execute	BOOL	Block enabling
	FILENAME#	STRING	Name of the recipe file
	INDEX	WORD UINT	Recipe index to be read
VAR_OUTPUT	Q	BOOL	End of operation
	ERROR	BOOL	Error occurrence flag
	ERRORID	BYTE USINT	Identifier of the occurred error
	DST	STRUCT	Variable where the data read will be saved
VAR	READRECIPE_INST_0	READRECIPE	Instance of access to block structure

Operation

When this block identifies a leading edge in Execute, it gets the data from the selected recipe by the INDEX index in the # FILENAME file and sends them to the DST. If everything goes successfully, Q receives TRUE and remains so while Execute is TRUE.

NOTE!

Recipes stored in RAM is identified by 'RECIPE_NAME'. Recipes stored on the SD card are identified by 'RECIPE_NAME.CSV'.

When Execute has FALSE value, DST remains unchanged.

If there is any error in the execution, the Error output is activated and ErrorID displays an error code according to the table below.

Code	Description
1	Incomplete recipe
2	Invalid structure
3	Nonexistent recipe
4	Invalid file
5	Invalid file or nonexistent SD card
6	SD card blocked for writing
7	SD card busy (log or other use)

Block Flowchart

READRECIPE_flowchart

Example in Ladder

READRECIPE_example01

The above example searches the index 3 of the recipe file stored in RAM 'RECIPE_RAM'. The block does not find the specified file, enabling the ERROR output with ERRORID with value 5 and disabling the Q output.

READRECIPE_example02

The above example searches the index 3 of the recipe file stored in RAM 'RECIPE_RAM'. The block finds the specified file, but does not find the index 3, enabling the ERROR output with ERRORID with value 3 and disabling the Q output.

READRECIPE_example03

The above example searches the index 3 of the recipe file stored in RAM 'RECIPE_RAM'. The block finds the file and the specified index, stores values in DST, disables the ERROR output and enables Q output.

Example in ST

The example below displays the instructions for applying the example above in the ST language.

VAR

DST : STRUCT_RECIPE;

READRECIPE_INST_0 : FB_ReadRecipe;

END_VAR

READRECIPE_INST_0.Execute := DI1;

READRECIPE_INST_0(FILENAME:='RECIPE_RAM', INDEX:=3, DST=>DST);

DO1 := READRECIPE_INST_0.Q;