Service and maintenance
5.3 FB error messages
Communications module RF120C with application blocks for S7-1200 and S7-1500
Operating Instructions, 07/2013, C79000-G8976-C328-01
59
Errors from backplane bus
The transport layer of the bus system being used (backplane bus, PROFIBUS, PROFINET)
is signaling an error. For precise troubleshooting and analysis, a PROFIBUS tracer can be
useful. For PROFINET, the open source software "Wireshark" can be used. The PROFIBUS
or PROFINET system diagnostics can provide further information about the cause of the
error.
Table 5- 5
Error messages from the backplane bus using the STATUS output parameter
Byte
Description
0
1
2
Cxh 80h 0Ah Communications module is not ready (temporary message)
•
This message is received by a who is not using the Ident profile and is polling the communications
module acyclically and at short intervals.
Cxh 8xh 7Fh Internal error on parameter x. Cannot be remedied by the user.
Cxh 8xh 22h Area length error when reading a parameter.
This error code indicates that parameter x is partially or completely outside the operand range or the
length of a bit array for an ANY parameter is not divisible by 8.
Cxh 8xh 23h Area length error when writing a parameter.
This error code indicates that parameter x is partially or completely outside the operand range or the
length of a bit array for an ANY parameter is not divisible by 8.
Cxh 8xh 24h Area error when reading a parameter.
This error code indicates that parameter x is in a range that not allowed for the system function.
Cxh 8xh 25h Area error when writing a parameter.
This error code indicates that parameter x is in a range that is not allowed for the system function.
Cxh 8xh 26h Parameter contains a time cell number which is too high.
Cxh 8xh 27h Parameter contains a counter cell number which is too high.
Cxh 8xh 28h Alignment error when reading a parameter.
The reference to parameter x is an operand whose bit address is not equal to 0.
Cxh 8xh 29h Alignment error when writing a parameter.
The reference to parameter x is an operand whose bit address is not equal to 0.
Cxh 8xh 30h Parameter is in write-protected global DB.
Cxh 8xh 31h Parameter is in write-protected instance DB.
Cxh 8xh 32h Parameter contains DB number which is too high.
Cxh 8xh 34h Parameter contains FC number which is too high.
Cxh 8xh 35h Parameter contains FB number which is too high.
Cxh 8xh 3Ah Parameter contains the number of a DB that is not loaded.
Cxh 8xh 3Ch Parameter contains the number of an FC that is not loaded.
Cxh 8xh 3Eh Parameter contains the number of an FB that is not loaded.
Cxh 8xh 42h An access error has occurred while the system wanted to read out a parameter from the I/O area of
the inputs.
Cxh 8xh 43h An access error has occurred while the system wanted to write a parameter to the I/O area of the
outputs.
Cxh 8xh 44h Error on n-th (n > 1) read access after occurrence of an error.
Cxh 8xh 45h Error on n-th (n > 1) write access after occurrence of an error.
Cxh 80h 90h Specified logical base address is invalid: No assignment in SDB1/SDB2x exists, or it is not a base
address.
