Management parameters for READ_VAR

[mmaliga]

The help on the management parameters for the READ_VAR seems to be lacking some details -

I have tried to use the cancel function in an M580.  The help indicates that this is "data managed by the system" .

However, the cancel bit text below tells how to set the cancel bit as a user.

I have tried this without success.

It seems that the IN-OUT pin GEST at the bottom of the block overwrites the cancel with a "0" after I have put a "1" in it.

It appears from the instructions that I need to program it on both the input and the output pins.

Has anybody used this successfully that can lend some hints?

[Fajar_Santoso]

Dear MMaliga,

Did you success this function block?

Regards,

Fajar Santoso

[mmaliga]

I am OK with the function block.  Have many programmed and working well.  It is just the "Cancel" Input/Output  that I still don't understand.