Echelon LonPoint Application and Plug-In - Manual (Page 28)

3-2 Digital Input/Counter Functional Block
The Digital Input/Counter Functional Block
The Digital Input/Counter functional block reads the state of a digital signal.
This value is then processed, and the resulting value is sent to the digital output
network variable. The Digital Input/Counter is a superset of the Digital Input; it
contains all the functionality of the Digital Input plus additional capabilities.
The following figure and tables summarize the inputs and outputs of the Digital
Input/Counter functional block:
Input Network Variables
Default name Default type Description
Control UNVT_
count_control
(changeable)
The Control network variable is an
enumerated type that controls
counting functions.
Output Network Variables
Default name Default type Description
Digital SNVT_switch The Digital output network
variable. The meaning varies
according to the processing option.
See the Processing Options, later in
this chapter, for more information.
Analog SNVT_temp_f
(changeable)
The Analog output network
variable. The meaning varies
according to the processing option.
See the Processing Options, later in
this chapter, for more information.
This functional block contains an analog output network variable which is used
for several different purposes depending on the processing option, and a control
input network variable which may be used to clear, hold, pause, or preset the
analog output. The digital output network variable type is always SNVT_switch.
The analog output network variable type is changeable. See Chapter 1 for a
discussion of network variables.
Configuring the Digital Input/Counter with the LonPoint
Plug-in
Right-click a Digital Input/Counter functional block and select Configure from
the shortcut menu to open the Digital Input/Counter window of the LonPoint
Plug-in. The Digital Input/Counter functional block window contains the