Echelon LonPoint Application and Plug-In - Manual (Page 74)

8-2 Analog Function Block Functional Block
The Analog Function Block (AFB) Functional Block
The AFB functional block performs mathematical, logical, or enthalpy functions
using up to 2 analog inputs and a digital input (not all inputs are used for all
functions). The following figure and tables summarize the inputs and outputs of
the AFB functional block:
Input Network Variables
Default name Default type Description
A1/A2 SNVT_temp_f
(changeable)
Two Analog input network
variables that are processed by the
AFB functional block.
Digital SNVT_switch A Digital input network variable
that is processed by the AFB
functional block.
Output Network Variables
Default name Default type Description
A_Out SNVT_temp_f
(changeable)
An Analog output network variable
set by the AFB functional block.
Digital_Out SNVT_switch A Digital output network variable
set by the AFB functional block.
Configuring the AFB Functional Block using the LonPoint
Plug-in
Right-click an AFB functional block shape and select Configure from the
shortcut menu to open the AFB window of the LonPoint Plug-in. The AFB
window contains six tabs: Analog Function Block, Inputs, Function,
Outputs
, Heartbeats, and Status.