Appendix B: GPIO Control
•
87
Signal
Label
Description
•
Counter 0 clear event input
•
Timestamp counter set event input
Timestamp counter clear event input
GPIO_FVAL
Q12
Output to the internal grabber to replace or mix with
the camera’s FVAL signal. Depending on the camera,
the FVAL signal can be replaced or combined with the
signal of this output.
GPIO_LVAL
Q13
Output to the internal grabber to replace or mix with
the camera’s LVAL signal. Depending on the cameral,
the LVAL signal can be replaced or combined with the
signal of this output.
GPIO_TRIG
Q14
Trigger of image grabber when configured to use
hardware trigger.
GPIO_IRQ
Q15
Trigger for an application callback. When the callback
is invoked, it provides the following information:
•
A bit mask of the 8 LUT inputs at the time the
interrupt was generated.
•
The timestamp value at the time of the interrupt.
CNT_DOWN
Q16
Trigger for the down event of counter 0.
If available, can be used by one of the following
modules:
•
Rescaler 0 input
•
Delayer 0 references signal
•
Counter 0 clear event input
•
Timestamp counter set event input
•
Timestamp counter clear event input
CNT_UP
Q17
Trigger for the up event of counter 0.
If available, can be used by one of the following
modules:
•
Rescaler 0 input
•
Delayer 0 references signal
•
Counter 0 clear event input
•
Timestamp counter set event input
•
Timestamp counter clear event input
Signal Routing Block
In its simplest terms, the Signal Routing Block is a group of switches that let you route
signals to the
Lookup Table. You can direct PLC inputs and feedback inputs to signals I0 through I7.