Siemens SIMATIC CP 440 Manual page 130

Diagnostics with the CP 440
Displaying and Evaluating the STATUS Output
You can display and evaluate the actual parameters at the STATUS output of the
function blocks.
Note
An error message is only output if the ERROR bit (job completed with errors) is
set. In all other cases, the STATUS word is zero.
Event Class 30
Event class 30 contains error messages which might occur during communication
between the CP 340 and the CPU via the S7 backplane bus.
The table below describes event class 30.
Table 8-3 Event Class 30
"Error in communication between the CP and CPU"
Event No.
(1E)0DH Job aborted due to a cold restart, warm
restart or reset
Module firmware does not exist
(1E)0EH Static error when the RD_RED SFC was
called. The return value RET_VAL of SFC is
available for evaluation in the SFCERR
variable in the instance DB.
(1E)0FH Static error when the WR_REC SFC was
called. The return value RET_VAL of SFC is
available for evaluation in the SFCERR
variable in the instance DB.
(1E)41H Impermissible number of bytes set in the
LEN parameter of the FBs.
8-12
Event Class 30 (1EH):
Event
Point-to-point connection CP 440 Installation and Parameter Assignment
Further Information/Remedy
Repeat the job.
Check whether the module is inserted.
Load the SFCERR variable from the
instance DB.
Load the SFCERR variable from the
instance DB.
Keep to the value range of 1 to 200 bytes.
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