Plugin: TACI - Telnet Action Command 
Interface 
 Konzept | Concept | Projet | Concepto  
  
GeViScope provides an internal optional to send and receive actions system-wide. The normal method 
of externally sending and receiving actions is provided by the GeViScope SDK. However, in a number 
of situations it is not possible to use the Win32-based SDK. TACI (Telnet Action Command Interface) 
thus provides an option for sending and receiving actions in ASCII format. TACI converts these ASCII 
actions into normal GeViScope actions, or conversely converts GeViScope actions into ASCII format 
for transmission over a Telnet port. 
  
 G u t  z u  w i s s e n  |  G o o d  t o  k n o w  |  B o n  à  s a v o i r  |  C o n v i e n e  s a b e r  
Your software must be capable of sending and receiving text in ASCII format.   
  
Use the description of the actions in the SDK to become familiar with the actions and their parameters. 
The GSCPLC Simulator helps you to find the GeViScope directory. 
  
  
 Prozedur | Procedur | Procédure | Procedimiento  
  
How to configure TACI 
Ensure that the file GscTelnetActionCommandInterface.dll has been copied to the directory 
GeViScope/Mediaplugins. Copy the file to this location if it is not already there. 
  
In GSCSetup, open the Hardware Selection menu. 
 
Click with the right mouse button in the list view and select Add in the popup menu. 


 
Select the plugin GscTelnetActionCommandPlugin (in our example, Plugin 004) by marking it and 
clicking on Add. 
  
The TACI plugin is now entered as a hardware resource in the hardware module list. If you click on it, 
you can set the required parameters. 
 
The following describes the parameters: 
  
 ADVICE 
UDP is not currently implemented. 
  
ActionFilterIn/ ActionFilterOut  
Regular Expression to filter incoming or outgoing 
messages. * means pass all.  
CommandTerminationChars  
Chars defining the end of a command  
FormatASCIIReply  
Format string of the reply from TACI {0}: Return value 
3: Error(No action 4: OK) {1}: Position of echo {2}: 
Send termination signal at the end (CR/ LF)  
FormatBinaryReply  
Obsolete  
FormatReceivedActions  
{0} Position of Action in the received string  
MaxTCPVonnections  
Maximum number of allowed TACI connections for one 
server  
SendAllActions  
Forward all actions from GeviScope to Telnet  
TCPBinaryIntelByteOrder  
Obsolete  
TCPBinaryRepyDownwardsCompatible  Obsolete  


TCPEnabled  
Obsolete  
TCPPort  
Number of TCP Port for the telnet connection  
Number of TCP Port for the telnet 
connection  
If set tot true you will receive an echo of your 
command  
  
Hello World! 
After you have configured TACI as described above, simply open a Telnet connection using the 
Windows Telnet program. To do this, open the CMD, tip in telnet and press enter. 
Then type o [hostname] 12007 . 
  
You can now send a simple user action, for instance CustomAction (1,"HelloWorld"). In the 
PLCSimulator, you see the actions that you have sent and you can send actions from the 
PLCSimulator to the Telnet clients.