User manual
IEC61131 User and Reference Manual 
April 22, 2008     
227 
Custom Function Reference 
The following sections describe Custom Functions and Custom Function Blocks that are 
specific to SCADAPack controllers. Custom functions return only one parameter and have 
no static data and custom function blocks return more than one parameter or have internal 
static data. 
Note:  The Simulate mode in ISaGRAF does not support Control Microsystems custom 
function blocks. 
Custom functions available are described in this section of the manual. 
The custom functions described in this section are formatted as follows. 
Function Title  Each custom function begins with the name of the function and a brief 
description. 
Description   A brief explanation of the custom function and its uses. 
Arguments  This defines the input and output arguments for the function. A description 
for each argument is included. 
Notes  This section contains any related information about the function.  
See Also  This section contains a list of related functions. 










