Echelon LonPoint Application and Plug-In - Manual (Page 9)

The LonPoint Application and Plug-in Guide 1-3
6 Analog Input
(AI) Senses current, voltage,
or resistance inputs Measure temperature,
pressure, humidity,
velocity, level
7 Analog Output
(AO) Drives current, voltage,
or resistance analog
outputs Variable speed drive
control; valve control;
damper control
8 Analog
Function
Block (AFB) Performs functions on
two analog values and a
digital value such as add,
subtract, multiply, divide,
greater than, less than,
enthalpy, and comparison Deadband thermostat,
heating/cooling
optimization
9 PID Controller
(PID) Performs closed-loop
control Pressure, temperature, or
position loops
10/11 Real Time
Clock (RTC) Maintains date, day of
week, and time of day Non-volatile system time
source
10/11 Event
Scheduler (ES) Schedules system events Scheduler with occupied
and unoccupied periods,
daily, weekly, holiday
schedules
10/11 State Machine
(SM) Controls system state Sequence of operations
controller
12 Type
Translator Converts network
variable data types Interface between
incompatible devices
13 Data Logger Logs periodic data based
on exceptional data
values or large changes in
data value. Logging periods of
extreme
temperature/rapid
fluctuations.
14 Node Object Management commands
for a device Putting devices into
Override. Getting device
status.
The LonPoint functional blocks are loaded into the LonPoint devices as listed below.
Table 1.2 Assignment of LonPoint Functional Blocks to LonPoint Devices
LonPoint Device Functional Block Quantity per Device
DI-10 Node Object
Digital Input
Digital Encoder
Analog Function Block
Type Translator 1
4
2
4
6
DO-10 Node Object
Digital Output
Digital Encoder
Analog Function Block
Type Translator 1
4
2
2
6
DIO-10 Node Object
Digital Input/Counter
Digital Output
Digital Encoder
Analog Function Block 1
2
2
2
2