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Moving/accessing data in FC when using IN, OUT or IN_OUT

Created by: Chris.Percival at: 10/26/2011 3:00 PM (1 Replies)

10/26/2011 3:00 PM	Rate (0)
Chris.Percival Posts: 30 Rating: (0)	HI, I want to write a function which uses a UDT as an input. The UDT happens to be a DWord in size. When this UDT is moved into the function, how does one access the data? I tried to us SFC21 FILL but this will not accept an FC IN or IN_OUT as an input although will accpet a temp of the same type as the IN. IE in the real world the udt has an actual address of DB100.DBW0 but once input into an FC????? Thanks
Chris.Percival Posts: 30 Rating: (0)
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10/28/2011 2:06 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 8/31/2025 Posts: 6874 Rating: (1368)	Chris.Percival I want to write a function which uses a UDT as an input. The UDT happens to be a DWord in size. When this UDT is moved into the function, how does one access the data? I tried to us SFC21 FILL but this will not accept an FC IN or IN_OUT as an input although will accpet a temp of the same type as the IN. IE in the real world the udt has an actual address of DB100.DBW0 but once input into an FC????? Dear Chris.Percival, Please check the following codes as a sample to access parameters declared as UDT in input and output of a function. Attachment contains the whole project. [code] TYPE "HDUDT" VERSION : 0.1 STRUCT ONE : DWORD ; TWO : DWORD ; END_STRUCT ; END_TYPE[/code] [code]FUNCTION "HDFC1" : VOID TITLE = VERSION : 0.1 VAR_INPUT HDFCE : "HDUDT"; END_VAR VAR_OUTPUT OUT1 : BOOL ; HDFCA : "HDUDT"; END_VAR BEGIN //CODE START NETWORK TITLE = L #HDFCE.ONE; L #HDFCE.TWO; ==D ; = #OUT1; ///////////////copy////////////////// L #HDFCE.ONE; T #HDFCA.ONE; L #HDFCE.TWO; T #HDFCA.TWO; END_FUNCTION[/code] Best regards Attachment UDT_FC.zip (140 Downloads)
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