Siemens SIMATIC S7-1500 Getting Started page 75

You can precisely evaluate the information and, for example, program the error handling in
the block with STL/FBD/LAD and SCL programs. The block generates an error ID that is
evaluated by the "GET_ERROR_ID" instruction. You can call the "GET_ERROR_ID"
instruction in both the MAIN block and in the function blocks. The CPU remains in RUN
mode.
S7-1500
Getting Started, 05/2014, A5E03981761-AC
Software section
3.2 Creating the program
75