Trigger/Breakpoint; Trigger; Breakpoint - National Instruments UMI-7664 User Manual And Specifications

Pin
1
2
3
4
5
6
7
8
9
Note None of the analog inputs are optically isolated.

Trigger/Breakpoint

The UMI-7774/72 has a single 15-pin D-SUB connector you can use for trigger input and breakpoint
output wiring. This connector provides access to four trigger inputs and four breakpoint outputs.
Refer to Figure 26 for the pin location of the Trigger/Breakpoint connector and to Table 8 for the
corresponding signals for each pin. Refer to Figure 1 to locate the Trigger/Breakpoint connector on the
UMI-7774/72.

Trigger

The UMI-7774/72 provides optical isolation on the trigger inputs. You can use the isolated power output
and isolated common on the connector to power on the field devices or sensors that provide the trigger
signals. All of the trigger inputs on the UMI-7774/72 are sinking inputs and are optically isolated. You
can wire the trigger input to a sourcing output device such as a PNP sensor, as shown in Figure 24, or to
a high-side switch as shown in Figure 28.

Breakpoint

The breakpoint outputs are pass-through signals on the UMI-7774/72. The breakpoint connector
includes both a +5 V output and digital ground.
Pin
1
2
3
4
5
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Table 7. Analog Input Connector Pin Assignment
Analog Input 1
Analog Input 2
Analog Input 3
Analog Input 4
Analog Reference (Output)
Analog Input Ground
Analog Input Ground
Analog Input Ground
Analog Input Ground
Table 8. Trigger/Breakpoint Connector Pin Assignment
Signal
Breakpoint 1
Breakpoint 3
†
+5 V (Output)
Digital Ground
C
iso
29
Signal
Optically Isolated
No
No
No
No
Yes
NI UMI-7774/72 User Guide and Specifications