062
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DATALOGGER
NI400
NI400
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DATALOGGER
NI400
NI400
Virtual Channel Configuration
By clicking “config” in the Virtual Channel row (Figure 23) the user can edit Identification
(channel name) and alarm properties.
Figure 66
Alarm configuration is the same for all channel types, with High, Low and Derivative
Thresholds. VC alarm with Logical Operation is present, as a Virtual Channel alarm can be
used in Virtual Channels Logical Alarms.
Common Errors and Warnings
I order to write Virtual Channel’s formula correctly, you should avoid typing the whole for-
mula in the dialog box prompted by the system.
Figure 67
Figure 68
As you can see this causes an error.
Formula has to be written using keys printed on the screen.
The prompt should be used
ONLY to write channel number.
The same procedure applies for dig, mux and cv buttons.
Figure 69
WRONG!
5
5