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National Instruments IC-3121 Manual

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USER MANUAL

IC-3121

Industrial Controller

This document contains detailed electrical and mechanical information for the National

Instruments IC-3121.

Contents

Hardware Overview.................................................................................................................. 1

Connector Pinouts............................................................................................................. 2

LED Indicators................................................................................................................14

Using the RESET Button................................................................................................ 18

Software Options.....................................................................................................................19

BIOS Configuration and System Recovery............................................................................ 19

Entering BIOS Setup.......................................................................................................19

BIOS Keyboard Navigation............................................................................................ 20

Main Menu......................................................................................................................20

Advanced Menu.............................................................................................................. 20

Boot Menu.......................................................................................................................21

Save & Exit Menu...........................................................................................................23

Restoring the NI Linux Real-Time Operating System....................................................24

Restoring the Windows Operating System..................................................................... 24

Mounting the IC-3121.............................................................................................................26

Securing the IC-3121 to a Mount....................................................................................30

Clearance Requirements................................................................................................. 30

Where to Go Next................................................................................................................... 31

Worldwide Support and Services............................................................................................ 32

Hardware Overview

The IC-3121 front panel consists of a VGA port, RJ50 serial port, two USB 2.0 ports, a

10/100/1000 Ethernet port, and two USB 3.0 ports.

The IC-3121 front panel also includes LEDs for communicating system status and a 44-pin

Digital I/O port. The Digital I/O port offers 8 isolated inputs, 8 isolated outputs, 2 bidirectional

differential I/O (RS-422) or single-ended input lines that can be used with a quadrature

encoder, and 8 bidirectional TTL lines.

Figure 1. IC-3121 Front Panel Connectors

IC-3121

Industrial Controller

RESET

DIGITAL I/O

10/100/

1000

ACT/

LINK

USER1

USER2

PWR/

FAULT

STATUS

1. VGA Connector

2. RS-232/RS-485 Serial Port

3. USB 2.0 Ports

4. Gigabit Ethernet Port

5. USB 3.0 Ports

6. 44-pin Digital I/O Connector

Connector Pinouts

The IC-3121 provides the following connectors.

Chassis Grounding Screw

Use the grounding screw to connect the chassis to earth ground. An earth ground connection is

optional.

Note An earth ground connection does not connect C or CISO to earth ground.

2| ni.com | IC-3121 User Manual

Figure 2. Chassis Grounding Screw

SYSTEM

12-24 V

C V

ISO

5-24 V

CISO V

ISO

1. Chassis Grounding Screw

Power Input Connectors

The IC-3121 requires a power supply to power the system. If needed for your application, an

additional power source is required to power the isolated outputs.

The same power supply may be used for both the system power and isolated outputs power if

isolation is not required and the power supply meets the voltage and power requirements for

both inputs. Refer to the IC-3121 Specifications for power requirements.

NI recommends the following power supply for the IC-3121.

Power Supply Part Number

NI PS-15 Industrial Power Supply, to power the system or isolated outputs 781093-01

IC-3121 User Manual | © National Instruments | 3

Figure 3. Power Connectors

SYSTEM

12-24 V

C V

ISO

5-24 V

CISO V

ISO

1. System Power Connector

2. Isolated Outputs Power Connector

Table 1. Power Connector Terminals

Terminal Description

C Common signal

V System power (12-24 VDC)

CISO Isolated common signal

VISO Power for isolated outputs (5-24 VDC)

Ethernet Port

The IC-3121 provides a Gigabit Ethernet port. The Ethernet port provides a connection

between the IC-3121, a network, and other Ethernet devices. The IC-3121 automatically

detects the speed of the connection and configures itself accordingly.

A CAT 5e or CAT 6 1000Base-T Ethernet cable is required to achieve 1,000 Mbps (Gigabit)

Ethernet performance. CAT 5 Ethernet cables are not guaranteed to meet the necessary

requirements. While CAT 5 cables may appear to work at 1,000 Mbps, CAT 5 cables can cause

bit errors, resulting in degraded or unreliable network performance.

(Windows only) The network Ethernet port provides Wake-on-LAN functionality from the

power off state when associated with the Intel® driver. Wake-on-LAN must be enabled in the

Power Management tab of the Intel I210 Gigabit Network Connection Properties dialog for the

primary Ethernet port in Device Manager. The NI GigE Vision driver (NI-GEV) does not

support Wake-on-LAN.

4| ni.com | IC-3121 User Manual

Figure 4. Ethernet Port Pin Locations

Table 2. Ethernet Port Pin Descriptions

Pin Fast Ethernet (100 Mbps) Gigabit Ethernet

MDI MDI-X

1 TX+ BI_DA+ BI_DB+

2 TX- BI_DA- BI_DB-

3 RX+ BI_DB+ BI_DA+

4 No Connect BI_DC+ BI_DD-

5 No Connect BI_DC- BI_DD-

6 RX- BI_DB- BI_DA-

7 No Connect BI_DD+ BI_DC+

8 No Connect BI_DD- BI_DC-

USB 2.0 Ports

The USB ports support common USB peripheral devices such as USB flash drives, USB hard

drives, USB-to-IDE adapters, keyboards, mice, and USB cameras.

(RT only) LabVIEW usually maps USB mass-storage devices to the /U, /V, /W, or /X drive,

starting with the /U drive if it is available. Refer to the LabVIEW Help for more information.

Figure 5. USB 2.0 Pin Locations

IC-3121 User Manual | © National Instruments | 5

Table 3. USB 2.0 Port Pin Descriptions

Pin Signal Name Signal Description

1 VBUS Cable Power (+5 VDC)

2 D- USB Data -

3 D+ USB Data +

4 GND Ground for power return

RS-485/422/232 Serial Port

The IC-3121 has a single serial port that can operate in either RS-485/422 mode or RS-232

mode. Set the serial port mode in the BIOS setup utility.

The serial port is a 10-position RJ50 modular jack, which can connect to serial devices, such

as PLCs, scanners, and lighting devices.

NI recommends the following serial cables for the IC-3121.

Cable Part Number

RJ50 10-position modular plug to DB-9 serial cable 182845-01 for 1 meter cable

182845-02 for 2 meter cable

182845-03 for 3 meter cable

Figure 6. RS-485/422/232 Serial Port Pin Locations

Table 4. RS-485/422/232 Serial Port Pin Descriptions

Pin RS-485/422 Mode RS-232 Mode

1 No Connect No Connect

2 TXD- Unused

6| ni.com | IC-3121 User Manual

Table 4. RS-485/422/232 Serial Port Pin Descriptions (Continued)

Pin RS-485/422 Mode RS-232 Mode

3 TXD+ Unused

4 No Connect No Connect

5 No Connect No Connect

6 RXD- GND

7 RXD+ Unused

8 Unused TXD

9 Unused RXD

10 GND GND

Related Information

Serial Port Configuration Submenu on page 21

VGA Port

Use the VGA port to connect a monitor to the IC-3121. Use any standard 15-pin VGA cable to

access the VGA port. The VGA port has a maximum resolution of 1920 x 1200 at 60 Hz.

Figure 7. VGA Port Pin Locations

5 15

Pin Signal Name Signal Description

1 RED Red analog video signal

2 GREEN Green analog video signal

3 BLUE Blue analog video signal

4 RESERVED Reserved

5 GND Ground reference

6 RED RETURN Ground reference

IC-3121 User Manual | © National Instruments | 7

Pin Signal Name Signal Description

7 GREEN RETURN Ground reference

8 BLUE RETURN Ground reference

9 PWR 5 V power for DDC

10 GND Ground return for power

11 NC No connect

12 DDC_D Data signal of serial communication

13 HSYNC Horizontal synchronization signal

14 VSYNC Vertical synchronization signal

15 DDC_C Clock signal of serial communication

USB 3.0 Ports

The USB ports support common USB peripheral devices such as USB flash drives, USB hard

drives, USB-to-IDE adapters, keyboards, mice, and USB cameras.

(RT only) LabVIEW usually maps USB mass-storage devices to the /U, /V, /W, or /X drive,

starting with the /U drive if it is available. Refer to the LabVIEW Help for more information.

Figure 8. USB 3.0 Port Pin Locations

Table 5. USB 3.0 Port Pin Descriptions

Pin Signal Name Signal Description

1 VBUS Cable Power (+5 VDC)

2 D- USB Data -

3 D+ USB Data +

4 GND Ground for power return

5 StdA_SSRX- SuperSpeed receiver differential pair

6 StdA_SSRX+

7 GND_DRAIN Ground for signal return

8| ni.com | IC-3121 User Manual

Table 5. USB 3.0 Port Pin Descriptions (Continued)

Pin Signal Name Signal Description

8 StdA_SSTX- SuperSpeed transmitter differential pair

9 StdA_SSTX+

Digital I/O

The 44-pin Digital I/O port on the IC-3121 offers 8 isolated inputs, 8 isolated outputs, 2

bidirectional differential inputs (RS-422) or single-ended input lines that can be used with a

quadrature encoder, and 8 bidirectional TTL lines. The Digital I/O port can be connected to

any appropriate shielded device or connector block using a shielded cable.

NI recommends the following digital I/O cables for the IC-3121.

Cable Part Number

44-pin D-sub male to pigtail cable 156083-03 for 3 meter cable

44-pin D-sub male to 44-position D-sub female cable 156084-03 for 3 meter cable

156084-0R5 for 0.5 meter cable

Refer to the following image and table for pin locations and descriptions.

Figure 9. 44-pin Digital I/O Connector Pin Locations

Table 6. Digital I/O Pin Descriptions

Pin Number Signal Description

1 Diff 0+ Bidirectional RS-422 I/O (positive side), or quadrature encoder

phase A+

2 GND Digital ground reference for TTL and differential I/O

3 TTL 0 Bidirectional TTL I/O

4 TTL 1 Bidirectional TTL I/O

IC-3121 User Manual | © National Instruments | 9

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