Siemens SINUMERIK 840D sl Commissioning Manual page 722

Programming commands
6.3 Functions
6.3.13 Function (FCT)
Description
The external functions are stored in a DLL file and identified by an entry in the definition lines
of the configuration file.
Note
The external function must have at least one return parameter.
Programming
Syntax:
Description:
Parameters:
The external function can e.g. be called in the LOAD block or in the PRESS block.
Example:
press(vs4)
RET = InitConnection(VAR1,13,"Servus",VAR2,VAR17)
end_press
104
Function name = ("File"/Type of return/Types of permanent
FCT
parameters/Types of variable parameters)
FCT InitConnection = ("c:\tmp\xyz.dll"/I/R,I,S/I,S)
An external function can e.g. be called in the LOAD block or in the PRESS
block.
Function name Name of external function
File Complete path to DLL file
Type of return Data type of the return value
Type of fixed Value parameter
parameter
Type of variable Reference parameter
parameter
The data types are separated by commas.
SINUMERIK Integrate Run MyScreens (BE2)
Programming Manual, 03/2013, 6FC5397-1DP40-3BA1