Siemens CP 243-1 Operating Instructions Manual page 109

The following sections list the error codes for the individual errors along with their meaning.
These sections also show how the individual errors are returned, which error codes apply to
which subroutines, and which error is transferred in which byte of the current SM memory
area. If error messages occur that are not described in these sections, please contact the
service hotline.
If these next few sections do not provide a solution, manual correction of the errors via STEP
7 Micro/WIN 32 is always necessary. The Internet wizard of STEP 7 Micro/WIN 32 should
always be used to configure the CP 243-1.
If your CP 243-1 returns errors indicating a problem with the configuration, check whether
your user program has overwritten the configuration.
NOTICE
During failure of the 24 V power supply, the CP 243-1 can no longer return errors.
CP 243-1
Operating Instructions, 03/2012, C79000-G8976-C244-02
– Global errors and general messages are transferred at byte offset 20 and 21. They are
interpreted as a word (SMW). The error or message codes transferred here are
deleted again after a maximum of 60 seconds. This mechanism prevents outdated
error or message codes from blocking these two bytes for a longer period of time.
– Channel-specific errors are transferred in the following bytes based on the S7
channel:
Byte offset 25 for channel 0
Byte offset 26 for channel 1
Byte offset 27 for channel 2
Byte offset 28 for channel 3
Byte offset 29 for channel 4
Byte offset 30 for channel 5
Byte offset 31 for channel 6
Byte offset 32 for channel 7
– Command-specific errors are returned in the byte with offset 33.
– E-mail-specific errors are returned in the byte with offset 34.
– The FTP client reports errors with the byte with offset 35.
– Errors on the FTP server are returned with the byte with offset 36.
– The HTTP server reports errors using the byte with offset 37.
5.2 Error messages of the CP 243-1
Diagnostics
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