National Instruments FP-3000 - Manual (Page 15)

Chapter 1 FP-3000 Network Module Overview
FieldPoint FP-3000 User Manual 1-2 www.ni.com
each 4–20 mA device to your controller, you can mount an FP-3000
network module in the field and run a single pair of wires (called the trunk)
from your PC to the FP-3000. You connect the 4–20 mA devices to the
FieldPoint I/O modules by short stretches of wire. The following figure
shows an FP-3000 connected to a Fieldbus network.
Note You can also create your own terminators and connectors as described in the
F OUNDATION Fieldbus Overview document.
The FP-3000 is National Instruments’ primary field device for F O U N D A T IO N
Fieldbus. It has an onboard processor that allows it to execute function
blocks. The FP-3000 implements F
O U N D A T IO N Fieldbus-compliant
Resource, AI, AO, DI, DO, and PID blocks. It also supports additional
National Instruments defined blocks, LOG, STAT, and EXPR.
Features of the FP-3000 Network Module
Function Blocks
Conventional devices connected to I/O modules are made visible as
Fieldbus function blocks. Function blocks are software modules which
describe the fundamental elements of an I/O or control system. The
FP-3000, like any F
O U N D A T IO N
Fieldbus–compliant device, has one or more
function blocks. The function blocks in different devices can be connected
1 FP-3000 Network
Module 2 Terminal Base
3 I/O Module
4 Fieldbus Trunk
5 Relcom power hub
6 To Fieldbus
7 Power supply
1
7
2
3
5
6
4