4 Modbus protocol description
30
4.9.3 Error codes as integer return values
For some lengthy sequences (e.g. email transfer) an error code is entered at
the end into an event field or the event list.
Error codes
Error code Description
Error list: Program memory management
1 Program cannot be created
2 Program does not exist
3 Program cannot be deleted
4 Segment cannot be deleted
5 Checksum cannot be saved
6 Checksum cannot be read
7 Program cannot be copied
8 Segment cannot be copied
9 Program checksum error
10 Program pointer tab. checksum error
11 Program memory end
12 Segment does not exist
13 Repeat jump marks cannot be corrected
Error list: General inputs and outputs
14 Please acknowledge with ENTER
15 Invalid number of places
16 The entry contains invalid characters
17 Value not within the limits
18 Segment incorrectly programmed
19 Password error
Error list: Profibus job processing
20 Busy flag not reset by the master
21 Inadmissible job
22 Error on data acceptance
23 No cyclical data existing
24 Inadmissible structure length
25 Inadmissible header ID
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