CSV file write in TwinCAT

Hi
I was trying to write a csv in twincad and I used the sample code from beckhoff (https://infosys.beckhoff.com/englis...tml/TcPlcLibUtilities_ARG_TO_CSVFIELD.htm&id=) but it showing error in database .
I was wondering if anyone suggests me a small program.
Thanks!
MAX_CSV_ROWS:UDINT:=100;MAX_CSV_COLUMNS:UDINT:=5;MAX_CSV_FIELD_LENGTH:UDINT:=100;

database : ARRAY[0..MAX_CSV_ROWS, 0..MAX_CSV_COLUMNS ] OF STRING(MAX_CSV_FIELD_LENGTH) := (* Source PLC database *)
'0_0', '0_1', '0_2', '0_3', '0_4', '0_5',
'1_0', '1_1', '1_2', '1_3', '1_4', '1_5',
'2_0', '2_1', '2_2', '2_3', '2_4', '2_5',
'3_0', '3_1', '3_2', '3_3', '3_4', '3_5',
'4_0', '4_1', '4_2', '4_3', '4_4', '4_5',
'5_0', '5_1', '5_2', '5_3', '5_4', '5_5';


END_VAR

Hi Piash,

When I need to write data from a Beckhoff PLC to a CSV file, I use FB_FileOpen/FB_FileWrite/FB_FileClose.

If you need to read from a CSV file, just do the same but use FB_FileRead instead of FB_FileWrite.

At this moment, I do not have a sample program using this function that I can send. But you'll see, those function are pretty easy to use, try it and let me know if needs more help!

Best regards,

Max4507 said:

Hi Piash,

When I need to write data from a Beckhoff PLC to a CSV file, I use FB_FileOpen/FB_FileWrite/FB_FileClose.

If you need to read from a CSV file, just do the same but use FB_FileRead instead of FB_FileWrite.

At this moment, I do not have a sample program using this function that I can send. But you'll see, those function are pretty easy to use, try it and let me know if needs more help!

Best regards,

Click to expand...

Thanks for your suggestion. I have fixed the error.

To use this sample program from beckhoff . We have to declare the variable MAX_CSV_COLUMNS, MAX_CSV_ROWS as constant. such as VAR CONSTANT.
for the data we have to use as
['0_0', '0_1', '0_2', '0_3', '0_4', '0_5',
'1_0', '1_1', '1_2', '1_3', '1_4', '1_5',
'2_0', '2_1', '2_2', '2_3', '2_4', '2_5',
'3_0', '3_1', '3_2', '3_3', '3_4', '3_5',
'4_0', '4_1', '4_2', '4_3', '4_4', '4_5',
'5_0', '5_1', '5_2', '5_3', '5_4', '5_5';]

then it will work

And you can copy those constants mentioned above from the sample program. I did exactly same mistake when i tried this same sample.

{attribute 'Tc2GvlVarNames'}
VAR_GLOBAL CONSTANT
MAX_CSV_ROWS : UDINT := 100;
MAX_CSV_COLUMNS : UDINT := 100;
MAX_CSV_FIELD_LENGTH : UDINT := 100;
END_VAR

Mara said:

And you can copy those constants mentioned above from the sample program. I did exactly same mistake when i tried this same sample.

{attribute 'Tc2GvlVarNames'}
VAR_GLOBAL CONSTANT
MAX_CSV_ROWS : UDINT := 100;
MAX_CSV_COLUMNS : UDINT := 100;
MAX_CSV_FIELD_LENGTH : UDINT := 100;
END_VAR

Click to expand...

Thanks. I already did exactly as your suggestion.