Chapter 3
Feature Set Description
©
National Instruments Corporation
3-5
FieldPoint FP-1000/1001 User Manual
Note:
You should not add or remove terminal bases while power is applied to the
bank. An I/O module can be hot-inserted only if an empty terminal base is
already available in the bank.
HotPnP During Power-Up
Upon power-up, the FP-1000/1001 automatically uploads an electronic
data sheet (EDS) from each I/O module in its bank. The FP-1000/1001
then configures each I/O module in the bank to factory default settings
in the module’s EDS, or stored SnapShot settings if the SnapShot
feature is enabled.
HotPnP During Operation
You may need to insert or replace one or more I/O modules in a bank
while your system is operational (power is on and the network may or
may not be active).
Inserting New I/O Modules
When a new I/O module is inserted, the FP-1000/1001 automatically
uploads the EDS and configures the I/O module to factory default
settings in the module’s EDS, or to stored SnapShot settings if the
SnapShot feature is enabled. This configuration is accomplished
without any intervention from the host computer or software.
While one or more new I/O modules in a bank are being serviced by the
HotPnP feature, the other I/O modules in the bank remain fully
operational and accessible on the network without any interruptions. As
soon as the FP-1000/1001 configures the new I/O module via the
HotPnP service, that I/O module becomes automatically accessible on
the network.
Replacing I/O Modules
When an I/O module is removed, the FP-1000/1001 does not undertake
any special course of action for the bank. The host computer (or the
software executing on it) may be unaware that the I/O module is
missing, and may continue to send commands to the missing I/O
module. Each command returns an error response, but the
FP-1000/1001 remembers the commands sent to the missing I/O
module.