BOO equivalent in x70

[Arek_P]

Hi,

What would be the best block in x70 to replace functionality of BOO function block from IsaGraf?

Thanks

Arek

[AlastairF]

There are function blocks that convert from various data formats to BOOL types, not a generic block.

Use commands such as BYTE_TO_BOOL, INT_TO_BOOL, REAL_TO_BOOL etc.

[Arek_P]

Thank you for you answer.

I was under same impression before I tested out REAL_TO_BOOL function.

Attached pictures present 474 logic on the left and 350 on the right. Both sides present online values.

When "800" goes to the BOO block it returns true and with negation of pin comes as false to the OR block with false as end result.

Same number on 474 is shown with use of REAL_TO_BOOL and NE functions. REAL_TO_BOOL looks at last significant bit of 800 and pass on false to OR block and end results in true. Using NE function and checking against zero give same result as BOO. So NE pass false to OR block with negation of the pin and end result is false.

Same test with done with "800.2" give same results for BOO and NE functions but change result of the REAL_TO_BOOL function. 

I still would like someone to confirm my observations but looks to me that NE function with compare to zero will do same as BOO for numbers. Not sure for the words...

Thanks

Arek

[AlastairF]

Yes, you have to look at the description provided for each of the functions.
BOO seems to be a bit unique. The Control Expert logic functions (in RemoteConnect) work as per Help file but probably the NE 0 function may be the closest to BOO as you have found.
Unfortunately RemoteConnect doesn't have the implicit data conversion (option flag) that Control Expert has which would possibly make the use easier.