SyncReadVarList
(FUN)
FUNCTION SyncReadVarList : Error
Reads the given variable list synchronously. The list must have been created previously by a call to SyncReadVars
Important
As communication is involved, take care (async calls etc.) when using this method from an IEC-Task
- InOut:
Scope
Name
Type
Comment
Return
SyncReadVarList
An errorcode representing the result of this operation
Input
hPlcHandler
SysTypes.RTS_IEC_HANDLE
The instance of the PLCHandler to work on.
hVarList
SysTypes.RTS_IEC_HANDLE
The variable list to read.
Output
ppVarInfos
POINTER TO POINTER TO VariableValue
An ARRAY OF POINTERs to VarInfo instances representing each single read value
numVarsResult
UDINT
The size of the array of returned variables