PLC Program Help

Dear All,

Anyone help me for PLC program in STL,

1. Positive edge detection in STL without using FP

2. Negative edge detection in STL without using NP

Thanks&Regards,

Ad1.

signal  memory  pulse

--| |-------|\|-----------( )

signal                 memory

--| |--------------------( )

jacek d

Ad1.

signal  memory  pulse

--| |-------|\|-----------( )

signal                 memory

--| |--------------------( )

Thanks for your reply..

Can you please share STL code for negative edge detection?

Thanks&Regards,

Hello.

Translating to STL would look like:

// Detect rising/positive edges only
// ..as alternative to using FP
A    signal
AN   memory
=    pulse

A    signal
=    memory

and

// Detect falling/negative edges only
// ..as alternative to using FN
AN   signal
A    memory
=    pulse

A    signal
=    memory

Combined action would be:

// Detect both rising/positive
// and falling/negative edges

AN   signal
X    memory
=    pulse

A    signal
=    memory

Regards.

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The Helping Hand