Internet PLC Forum
General => Technical support => Topic started by: cdenk on June 14, 2007, 12:33:47 PM
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This is with a T100MD888+ and Trilogi
If I have a dDIFD function that has a normally open contact that will trigger that function occasionally, and in other circuits with dCUSf functions that have a call to the dDIFD, will the call ignore the falling edge requirement, and just execute the statements in the dCUSf? Or do I have to separate the 2 items, into 2 functions, with same statements?
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Not sure I understand your question. [DIFD] is a special function that is used to drive a coil - usually a relay or output coil. I am not sure what you mean by calling the [DIFD] function from within a {dCusF} since there isn't a command in TBASIC that lets you call a [DIFD].
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Here's the calling Custom Function is of type "dCUSF" has the statement "Call 49" in it.
Custom Function 49 is of the type "dDIFD" and has the following statements in it:
SETIO ELECT_1_ST
SETIO ELECT_2_ST
TimerPV[10] = 1200
Custom function 49 is on a circuit line with a single Input contact, and only the dCUSF as the output.
The question is when the call 49 is executed, will the 3 statements in #49 get executed. Trilogi 6.12 & 6.13 allowed me to construct this configuration.
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Yes, when you execute a CALL 49 from another custom function, all the statements in the custom function #49 will be executed regardless of how this function (#49) is being connected at other parts of the ladder program.