Learning/s7netplus
0
0
Fork 0
mirror of https://github.com/S7NetPlus/s7netplus.git synced 2026-02-17 22:38:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

ReadMultipleVars: removed returned List, that was of no use, and added documentation.

Browse Source 
Signed-off-by: Michele Cattafesta <michele.cattafesta@mesta-automation.com>
This commit is contained in:
Michele Cattafesta
2016-05-02 00:38:51 +02:00
parent 0beb9a91db
commit f5303cb3a7
1 changed files with 5 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
S7.Net/PLC.cs
View File

@@ -273,12 +273,14 @@ namespace S7.Net
}
/// <summary>
/// Reads multiple vars in a single request. You have to create and pass a list of DataItems and you obtain in response the same list with the values.
/// Reads multiple vars in a single request.
/// You have to create and pass a list of DataItems and you obtain in response the same list with the values.
/// Values are stored in the property "Value" of the dataItem and are already converted.
/// If you don't want the conversion, just create a dataItem of bytes.
/// DataItems must not be more than 20 (protocol restriction) and bytes must not be more than 200 + 22 of header (protocol restriction).
/// </summary>
/// <param name="dataItems">List of dataitems that contains the list of variables that must be read. Maximum 20 dataitems are accepted.</param>
/// <returns>List of dataItem containing the values of the variables</returns>
public List<DataItem> ReadMultipleVars(List<DataItem> dataItems)
public void ReadMultipleVars(List<DataItem> dataItems)
{
int cntBytes = dataItems.Sum(dataItem => VarTypeToByteLength(dataItem.VarType, dataItem.Count));
@@ -318,20 +320,16 @@ namespace S7.Net
dataItem.Value = ParseBytes(dataItem.VarType, bytes, dataItem.Count);
}
return dataItems;
}
catch (SocketException socketException)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = socketException.Message;
return null;
}
catch (Exception exc)
{
LastErrorCode = ErrorCode.WriteData;
LastErrorString = exc.Message;
return null;
}
}