Trigger/Breakpoint; Trigger - National Instruments UMI-7774 User Manual

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None of the analog inputs are optically isolated.

Note

Trigger/Breakpoint

Chapter 3

UMI-7774/7772. Figure 3-17 shows the pin locations for the Analog Input

connector. Table 3-7 shows the corresponding signals for each pin.

Table 3-7. Analog Input Connector Pin Assignment

The UMI-7774/7772 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.

The UMI-7774/7772 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-7774/7772 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 3-16.

Connecting the UMI-7774/7772 to Drives and Other Devices

Signal

Analog Input 1

Analog Input 2

Analog Input 3

Analog Input 4

Analog Reference (Output)

Analog Input Ground

3-25

National Instruments UMI-7774/7772 User Manual

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Umi-7772