Siemens SIMATIC RF120C Operating Instructions Manual page 32

Parameter assignment and configuration
4.4 Ident instructions
Output parameters
● DONE (Bool)
The job was executed. If the result is positive, this parameter is set.
● ERROR (Bool)
The job was ended with an error. The error code is indicated in Status.
● BUSY (Bool)
The job is being executed.
● STATUS (DWORD)
Display of the error message if the ERROR bit was set.
● PRESENCE (Bool)
This bit indicates the presence of a transponder. The displayed value is updated each
time the block is called.
● ENO
Enable output
General sequence when calling function blocks
Case
①
Case
②
Case
③
Figure 4-5
32
By setting EXECUTE (EXECUTE = 1) the function/instruction is started. If the job was
completed successfully (DONE = 1), you need to reset EXECUTE.
EXECUTE is set for only one cycle. As soon as BUSY is set (and DONE is reset), you can
reset EXECUTE again.
Handling as in Case 1, however with error output. As soon as ERROR is set, the precise error
code is available in the STATUS output.
General sequence when calling function blocks
Communications module RF120C with application blocks for S7-1200 and S7-1500
Operating Instructions, 07/2013, C79000-G8976-C328-01