Siemens SIMATIC CP 340 User Manual page 140

Diagnostics with the CP 340
8.2 Diagnostics Messages of the Function Blocks P_SEND, P_RCV and P_PRINT
Displaying and evaluating the STATUS output
You can display and evaluate the actual address of the function blocks' STATUS outputs.
Note
An error message is only output if the ERROR bit (job completed with error) is set at the
same time. In all other cases the STATUS word is zero.
Event class 30
Event class 30 contains error messages, which could be output during communication via
the S7 backplane bus between CP 340 and the CPU.
The table below contains a description of event class 30.
Table 8- 2 Event class 30
Event no. Event
(1E)0DH Job aborted due to warm restart, hot restart or reset
(1E)0EH Static error when calling RD_REC SFC or RDREC
SFB. The RET_VAL return value for the SFC/SFB is
made available to you for evaluation in the SFCERR
or SFCSTATUS variable respectively on the
instance DB.
(1E)0FH Static error when calling WR_REC SFC or RDREC
SFB. The RET_VAL return value for the SFC/SFB is
made available to you for evaluation in the SFCERR
or SFCSTATUS variable respectively on the
instance DB.
(1E)41H The number of bytes specified at the FBs' LEN
parameter is not permissible.
(1E)41H P_PRINT FB:
The number of bytes specified for the variable or
format string in the pointer DB under length is not
permissible.
(1E)43H P_PRINT FB:
No pointer available for format string.
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Event class 30 (1EH):
"Communication error between CP and CPU"
More information/To correct and avoid errors
Load the SFCERR or SFCSTATUS variable from
the instance DB.
Load the SFCERR or SFCSTATUS variable from
the instance DB.
You must stay within a range of values of 1 to
1,024 bytes.
You must specify a permissible length:
32 bytes for variables, 150 bytes for format strings.
Enter the data block no. and data word no. for the
format string in the pointer DB.
PtP coupling and configuration of CP 340
Manual, 04/2011, A5E00369892-03