Read
This method can be used to read the current configurations of the TwinCAT Database Server. Any temporary configurations that may be included are marked accordingly.
Syntax
METHOD Read : BOOL
VAR_INPUT
pDBConfig: POINTER TO ARRAY [1..MAX_CONFIGURATIONS] OF ST_ConfigDB;
cbDBConfig: UDINT;
pAutoLogGrpConfig: POINTER TO ARRAY[1..MAX_CONFIGURATIONS] OF
ST_ConfigAutoLogGrp;
cbAutoLogGrpConfig: UDINT;
pDBCount: POINTER TO UDINT;
pAutoLogGrpCount: POINTER TO UDINT;
END_VAR
Inputs
Name | Type | Description |
|---|---|---|
pDBConfig | POINTER TO ARRAY [1..MAX_CONFIGURATIONS] OF ST_ConfigDB | Pointer address of the array into which the database configurations are to be written. |
cbDBConfig | UDINT | Length of the database configuration array |
pAutoLogGrpConfig | POINTER TO ARRAY[1..MAX_CONFIGURATIONS] OF | Pointer address of the array into which the AutoLogGrp configurations are to be written. |
cbAutoLogGrpConfig | UDINT | Length of the AutoLogGrp configuration array |
pDBCount | POINTER TO UDINT | Pointer address for storing the number of database configurations. |
pAutoLogGrpCount | POINTER TO UDINT | Pointer address for storing the number of AutoLogGrp configurations. |
Return value
Name | Type | Description |
|---|---|---|
Read | BOOL | Displays the status of the method. Returns TRUE as soon as the method execution is finished, even in the event of an error. |
Sample
VAR
fbConfigTcDBSrv : FB_ConfigTcDBSrvEvt(sNetId := '', tTimeout:=T#5S);
aDBConfig : ARRAY[0..MAX_CONFIGURATIONS] OF ST_ConfigDB;
aAutoGrpConfig : ARRAY[0..MAX_CONFIGURATIONS] OF ST_ConfigAutoLogGrp;
nDbCount : UDINT;
nAutoGrpCount : UDINT;
tcMessage : I_TcMessage;
END_VAR
IF fbConfigTcDBSrv.Read(
pDBConfig := ADR(aDBConfig),
cbDBConfig := SIZEOF(aDBConfig),
pAutologGrpConfig := ADR(aAutoGrpConfig),
cbAutoLogGrpConfig := SIZEOF(aAutoGrpConfig),
pDBCount := ADR(nDbCount),
pAutoLogGrpCount := ADR(nAutoGrpCount))
THEN
IF fbConfigTcDBSrv.bError THEN
tcMessage := fbConfigTcDBSrv.ipTcResult;
nState := 255;
ELSE
nState := 0;
END_IF
END_IF