Primary Function
Trigger
Quadrature Encoder
External Shutdown
Control
Product Selection Port
General-Purpose
General-Purpose
†
ISO Input 5 can also function as a latch for the product selection port.
I/O for Normal Operation
© National Instruments Corporation
Table 3-2 summarizes the isolated inputs and outputs available on the
NI CVS-1450 device.
Table 3-2. Isolated Inputs and Outputs
Input or
Number
Output
Available
Input
3
Input
1
Input
1
†
Input
1
Input
2
Output
4
The following sections describe I/O functions that are available on the
NI CVS-1450 device during normal operation.
Trigger Inputs
Trigger inputs are available from both TTL inputs and isolated inputs. You
can use these trigger inputs to synchronize the NI CVS-1450 device with
an external event, such as the assertion of a signal generated by a proximity
sensor or a PLC to indicate that an inspection item is passing in front of the
camera. The NI CVS-1450 device uses this input to initiate a timed pulse
44-Pin DSUB
CVS-1450
Signal
Names
Pin Number
TRIG 0
†
ISO Input 5
ISO Input 8
ISO Input 6
ISO Input 7
ISO Input 11
ISO Input 0
ISO Input 1
ISO Input 2
ISO Input 3
ISO Input 4
ISO Input 9
ISO Input 10
ISO Output 0
ISO Output 1
ISO Output 2
ISO Output 3
3-3
Chapter 3
Digital I/O Functionality
on NI
37-Pin
Device
Terminal Block
Pin Number
—
—
35
15
40
27
37
25
38
26
44
31
15
9
30
10
31
11
32
13
34
14
41
29
43
30
12
19
13
35
27
36
28
37
NI CVS-1450 Series User Manual