Technical description Chapter 8
APCI-/CPCI-1500
31
WARNING!
Do you operate all inputs with the same voltage supply?
The voltage
supply must deliver at least 16 x 6 = 96 mA
.
The maximum input voltage is 30 V.
Transil diodes, Z diodes, C filters and optical couplers protect the system bus
from noise emitted by the peripheral. The effects of inductive and capacitive
noise are thus reduced.
The board requires no initialisation to read the 24 V digital information. After
successful power ON reset, data is immediately available on the board.
Special input functions
1) Interrupt:
The inputs 1 to 14 can generate an interrupt.
Inputs 1 to 8:
It is possible to declare an
OR
or
AND
event to generate an interrupt.
Inputs 9 to 14:
It is possible to declare an
OR
event to generate an interrupt.
Inputs 15 & 16:
are not interruptible and are not used in events.
2) Counter
Counter 1:
Input 14
signal input
Counter 2:
Input 10
signal input
Input
11
can be used for a "trigger" function
Input 12
can be used for a "gate" function.
Counter 3
Input 15
signal input
Input
16
can be used as a "gate" function.
Fig. 8-3: Protection circuitry for the inputs
