Not a number ABB

[phoenixNature 0]

In SIEMENS STEP 7 there is not a number. I'm using that in a case of some fault.

For example if REAL x= 70.0 then X>60.0 will give a true.

In a case of sensor fault X is equal to not a number X=DW#FFFFFFFF

Than every logic comparion will give a false. X>60.0 is false

 

I'm searching for same not a number value for ABB Automation Builder (CodeSys)