Lenze E94AxPExxxx - Manual (Page 51)

Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
51
4 PLC functionality
4.3 Programming notes
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4.3.3 Generating application error messages
For generating application error messages, the L_DevApplErr and L_DevApplErrFix function blocks
from the LenzeDevice9400Vxxxx library are available.
The errors are written unambiguously via module ID and error ID. Moreover, an error response can
be defined, see the documentation for function libraries.
For defining an error message for an error, the LT_DevErrorList data type is available in the
LenzeDevice9400Vxxxx library.
Data type LT_DevErrorList
Definition of error messages:
1. Depending on the number of the error messages to be defined, an instance of the data type
LT_DevErrorList must be created.
• a declaration as array is possible
• the data type must be defined as global constant and initialised there,
see example:
2. The error messages are incorporated in the software when the PLC application is imported into
»Engineer«.

Tip!
The import into the »Engineer« is described in section "
Import in the »Engineer« project ".
( 65)
Identifier Data type Information/possible settings
dwModulId DWORD Module ID (980 ... 990) of the error
dwErrorId DWORD Error ID (0 ... 65535) for error message
strErrorMessage STRING(64) Error text
VAR_GLOBAL CONSTANT
(* Example for declaration of errors as single structures *)
Error1 : LT_DevErrorList := (dwModulId := 980, dwErrorId:=8001,strErrorMessage:='Error1');
Error2 : LT_DevErrorList := (dwModulId := 980, dwErrorId:= 8002,strErrorMessage:=' Error2');
(* Example for declaration of errors as array *)
ErrorList : ARRAY[1..4] OF LT_DevErrorList :=(dwModulId := 901, dwErrorId:=1,strErrorMessage:='Hallo1'),
(dwModulId := 981, dwErrorId:= 8002,strErrorMessage:=' Error3'),
(dwModulId := 981, dwErrorId:= 8003,strErrorMessage:=' Error4'),
(dwModulId := 981, dwErrorId:= 8004,strErrorMessage:=' Error5');
END_VAR

Note!
• If the declaration of error messages is stored in an export file with the name
"Error_Text_Declaration.exp" in the project directory, the error messages will be read
out of this file during the importing process.
• Before error messages are imported from coded PLC projects, it is necessary to place
the error messages in an export file.