Diagnostics with the CP 340
8.2 Diagnostics Messages of the Function Blocks P_SEND, P_RCV and P_PRINT
PtP coupling and configuration of CP 340
Manual, 04/2011, A5E00369892-03
141
Calling the SFCERR or SFCSTATUS variable
You can call the SFCERR or SFCSTATUS variable to obtain more detailed information
about the pending event class 30 error, 14 (1E0EH) or 15 (1E0FH).
You can only load the SFCERR or SFCSTATUS variable by means of symbolic access to
the corresponding function block's instance DB.
The error messages written to the SFCERR variable are listed in the reference manual titled
System Software for S7 300/400, System and Standard Functions
under the SFC 58
"WR_REC" and SFC 59 "RD_REC" system functions, refer to the error information or the
chapter titled "Evaluating errors with the RET_VAL output parameter".
The error messages written to the SFCSTATUS variable are listed in the reference manual
titled
System Software for S7 300/400, System and Standard Functions
under the SFB 52
"RDREC" and SFB 53 "WRREC" system functions, refer to the error information.
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