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Connections and Wiring
21
NI-2100, NI-3100, NI-4100 Hardware Reference Guide
Modes and Front Panel LED Blink Patterns
The following table lists the modes and blink patterns for the front panel LEDs associated with each mode.
These patterns are not evident until after the unit is powered.
Port Assignments and Functionality
The Port Assignments are as follows:
Modes and LED Blink Patterns
LEDs and Blink Patterns
Mode
Description
STATUS
(green)
OUTPUT
(red)
INPUT
(yellow)
OS Start
Starting the operating system (OS).
On
On
On
Boot
On-board Master is booting.
On
Off
On
Contacting DHCP
server
On-board Master is contacting a DHCP server for
IP configuration information.
On
Off
Fast Blink
Unknown DHCP
server
On-board Master could not find the DHCP server.
Fast Blink
Off
Off
Downloading Boot
firmware
Downloading Boot firmware to the Master’s on-
board flash memory. Do not cycle power during
this process!
Fast Blink
Fast Blink Fast Blink
No program running
There is no program loaded, or the
program is disabled.
On
Normal
Normal
Normal
On-board Master is functioning normally.
1 blink
per second
Indicates
activity
Indicates
activity
NI-2100 Port Assignments
NI-3100/4100 Port Assignments
Port
ICSP Port #
Port
ICSP Port #
Serial Port #1
1
Serial Port #1
1
Serial Port #2
2
Serial Port #2
2
Serial Port #3
3
Serial Port #3
3
Relays Ports (1-4)
4
Serial Port #4
4
IR/Serial Port #1
5
Serial Port #5
5
IR/Serial Port #2
6
Serial Port #6
6
IR/Serial Port #3
7
Serial Port #7
7
IR/Serial Port #4
8
Relays Ports (1-8)
8
I/O Port
9
IR Serial Port #1
9
IR Serial Port #2
10
IR Serial Port #3
11
IR Serial Port #4
12
IR Serial Port #5
13
IR Serial Port #6
14
IR Serial Port #7
15
IR Serial Port #8
16
I/O Port
17