Siemens SIMATIC Ident Installation Manual page 24

Programming interface
4.2 Error and status messages
Status error messages
Used by:
These messages signal status errors that occurred during the transfer of frames. They
mostly relate to the interface or local system resources.
Each message can include several individual messages. This is achieved by ORing the
individual error messages. To identify a status error message, however, the
"COM_ST_ERROR" is always set. The following status error messages are possible:
Status error messages
COM_ST_2MANY
COM_ST_NO_CON
COM_ST_NO_TRA
COM_ST_2SMALL
COM_ST_BCCERR
COM_ST_TIMCON
COM_ST_TIMTRA
COM_ST_TIMQUI
COM_ST_SCC_BR
COM_ST_SCC_PY
COM_ST_SCC_FR
COM_ST_SCC_OR
COM_ST_SNDRCV
COM_ST_SYSERR
24
• ComReadState
• ComWriteState
Too many jobs, send queue full
Connection establishment failed (sending)
Frame transfer failed (sending)
Receive buffer too small when receiving
Block check error while receiving
Timeout during connection establishment (sending)
Timeout during a frame (receiving)
Timeout during connection termination (sending)
COM message: Break
COM message: Parity error
COM message: Framing error
COM message: Overrun
Duplex conflict (sending)
Unknown system error
SIMATIC 3964R protocol for Windows 9x/XP/7
Installation Manual, 01/2013, J31069-D0131-U001-A2-7218