Negative Transition-Sensing Contact
| Function name | NTSCN_010 |
|---|---|
| Function version | 1.0 |
| Function state | stable |
| Compatibility with IEC61131-3 | compatible |
Graphic symbol :
Input / Output :
| Name | Belonging Group | Access | Types of data | Description |
|---|---|---|---|---|
| reference | Normal | R , RW | F , B , W , L , S | Reference variable of the contact |
Description :
If the reference variable is FLAG type:
The state of the right link is ON, from an evaluation of this element till the next, when a transition of the associated boolean variable (indicated with reference) from ON to OFF is noticed in the same time in which the state of the left link is ON. The state of the right link will be OFF all the other times.
Important
If in the first evaluation of this element is noticed the state OFF in the associated boolean variable (indicated with reference) the programmable controller system (QMove) will ignore that value till it will notice the state ON, at this point the Negative Transition-Sensing Contact will start to work normally.
If the reference variable is BYTE, WORD, LONG and SINGLE type:
The state of the right link is ON, from an evaluation of this element till the next, when a transition of the associated boolean variable (indicated with reference) from a value different from 0 (zero) to the value 0 (zero) is noticed in the same time in which the state of the left link is ON. The state of the right link will be OFF all the other times.
Important
If in the first evaluation of this element is noticed the value 0 (zero) in the associated boolean variable (indicated with reference) the programmable controller system (QMove) will ignore that value till it will notice a value different from 0 (zero), at this point the Negative Transition-Sensing Contact will start to work normally.