GetPlcFault: Returns Detected Errors on the Controller I/O

Function Description

This function returns a generic diagnostic of the Controller I/O in a bit field (FFFF hex means no error detected):

NOTE: The similar information is also available through the System Variable (bit0 and bit1) PLC_R.i_lwSystemFault_1.

Graphical Representation

IL and ST Representation

To see the general representation in IL or ST language, refer to the chapter Function and Function Block Representation.

I/O Variable Description

The following table describes the output variable:

Output	Type	Comment
GetPlcFault	WORD	Diagnostic of controller's I/O in a bit field (FFFF hex means no error detected).

The following table details the bits contained in the output bit field:

Bit	Meaning
0	FALSE = detected error on the I/O expansion bus. Use the GetRightBusStatus function to get detailed diagnostic information.
1	FALSE = detected error on the embedded I/O. Use the GetLocalIOStatus function to get detailed diagnostic information.
2..15	Reserved, always 1

Bit

Meaning

FALSE = detected error on the I/O expansion bus.

Use the GetRightBusStatus function to get detailed diagnostic information.

FALSE = detected error on the embedded I/O.

Use the GetLocalIOStatus function to get detailed diagnostic information.

2..15

Reserved, always 1