CSV Reader Library for the PAC

The library posted here contains a function block called CSV_READER that parses a CSV file into a two-dimensional array of strings.

The inputs and outputs are described below.

Direction	Data Type	Default Value	Description
In/Outs
astrCSVData	ARRAY [,] OF STRING(255)		Each CSV cell will be loaded into its own element in this array. The array can be any size. If it is too small to hold the entire CSV file, no error will be thrown. The addresses are in column, row format.
abyIgnoreList	ARRAY [*] OF BYTE		Array of characters to ignore. Not mandatory.
Inputs
bExecute	BOOL		Begin reading CSV file on a rising edge.
strFileName	STRING(255)		Full file path and file name with extension, using "/" to separate directories. Example: "/Hard Disk2/Job Lists/list_12.csv". The files do not need to have a CSV extension and can use any extension desired.
byColSep	BYTE	44 (Comma)	Character used to separate columns. Uses ASCII character specification. Default is 44 (comma). For tab, use 9. For semicolon, use 59. Can use any ASCII character as long as it is not the one used for byRowSep.
byRowSep	BYTE	13 (Carriage Return)	Character used to separate rows. Uses ASCII character specification. Default is 13 (carriage return). For line feed, use 10. For semicolon, use 59. Can use any ASCII character as long as it is not the one used for byColSep.
Outputs
bDone	BOOL		Entire CSV file has been read into the array or entire array has been filled.
bError	BOOL		Error occurred.
eError	CSV_ERRORS		Error code.

This function block must not be used in the EtherCAT_Master task as it performs file access and is therefore non-deterministic.

11JUN2021 DCLIFFE