Festo IFB11-03, Electronic Manual

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5. Diagnosis and error treatment
5−14
Festo P.BE−VIFB11−03−EN en 0503g
5.3 Status bits
The valve terminal provides 4 status bits for diagnostic pur
poses irrespective of the protocol used.
Please note
The four status bits of the valve terminal are only available
when the terminal is equipped with input modules.
The status bits are configured as inputs and always occupy
the four highest value addresses in the available address
space. If the inputs of the addresses underneath these are
not used, the terminal sets them to logic zero".
The position of the 4 status bits within the address space of
the valve terminal can be found in the following chapters on
diagnosis with the relevant field bus protocol.