Jetter JX2-IO16, Руководство пользователя

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10 Pulse stretching JetWeb
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10.4 Automatic pulse stretching
The pulse stretching condition is defined for each input separately using register
array elements 29 "Edge evaluation - Polarity", and 30 "Edge evaluation - Edge /
State".
Through register array elements 31 - 38 the pulse stretching duration can be
specified for each input separately, or the pulse stretching function can be disabled.
If the pulse stretching condition for an input is fulfilled, JX2-IO16 activates pulse
stretching for this input until the pulse stretching duration has elapsed. Then, pulse
stretching is automatically reset by the JX2-IO16 module. As long as the condition is
not fulfilled again, the actual input state is displayed.
Bits 16 - 23 in register 3xx0 display whether pulse stretching is active.
Automatic pulse stretching remains enabled until the value 0 is entered into register
array elements 31 - 38.
Examples
On the first JX2-IO16 module located after the controller, input signal of input 1 is to
be stretched for 10 ms automatically when the edge is rising.
Example7: Automatic pulse stretching - Variant 1
Loop with input number polling
Excerpt from the program
WHEN BIT_SET (3000, 16) THEN //
//
// Waiting until pulse
stretching of input 1
becomes active.
... // Doing anything
GOTO l_Check_Input_1 //
// Going back to the
beginning of the loop.
...
...
REGISTER_LOAD (3008, 30)
//
//
// Selecting the register
array element 30 -> Edge/
State
BIT_CLEAR (3009, 0) // Selecting "Edge"
REGISTER_LOAD (3008, 29) //
//
// Selecting register array
element 29 -> Polarity
BIT_SET (3009, 0) // Rising edge
REGISTER_LOAD (3008, 31) //
//
// Selecting register array
element 31 -> Pulse
stretching duration
REGISTER_LOAD (3009, 10) // Pulse stretching duration
of 10 ms
...
LABEL l_Check_Input_1
// Beginning of loop