NPort IA5000A-I/O Series / 1/2-port RS-232/422/485 device server with 6 or 12 digital I/Os


  • 6 or 12 digital I/Os to collect local data for status monitoring
  • Redundant dual DC power inputs and relay output supported
  • Cascading Ethernet ports for easy wiring
  • MicroSD for configuration backup
  • Warning by relay output and email
  • 4 kV serial surge protection


The NPort IA5000A-I/O serial device servers, which have built-in digital I/Os, provide maximum flexibility when you need to integrate serial equipment in the field with an Ethernet network. The combination of digital I/Os makes the device servers well-suited for a variety of industrial data acquisition applications. The DI/Os on the device can be controlled over TCP/IP using the Modbus TCP protocol and can be configured and secured from a web browser. The device can also be installed as a COM Port (patented Real COM) on a Windows/Linux PC to make it compatible with legacy applications.

All models are ruggedly constructed, DIN-rail mountable, and designed with redundant power inputs to ensure uninterrupted operation for industrial applications.

Cascading Ethernet Ports Make Wiring Easy

The NPort IA5000A-I/O device servers come with two Ethernet ports that can be used as Ethernet switch ports. One port connects directly to the network or server, and the other port can be connected to either another NPort IA device server or another Ethernet device. The dual Ethernet ports reduce wiring costs by eliminating the need to connect each device to a separate Ethernet switch.

Secure Remote Management and Configuration with SSH/HTTPS

Unauthorized access is one of the biggest headaches for system managers. In addition to IP filtering and password protection, the NPort IA5000A-I/O also supports SSH and HTTPS to provide protection from hackers. To transmit control messages securely, open the web console using a web browser that supports HTTPS (Internet Explorer, for example). You may also open the serial or Telnet console, such as PuTTY, using a terminal emulator that supports SSH.

Select “Any Baudrate” between 50 bps and 921.6 kbps

Most device servers only support a fixed number of serial baudrates. However, some applications require special baudrates, such as 250 kbps or 500 kbps. With the NPort IA5000A-I/O, you can use any baudrate between 50 and 921.6 kbps. If your device’s baudrate is not a standard baudrate, select “other” from the drop-down list and then enter the baudrate..

• Ethernet Interface
Number of Ports 2
Speed 10/100 Mbps, auto MDI/MDIX
Connector RJ45
Magnetic Isolation Protection 1.5 kV built-in
• Serial Interface
Number of Ports NPort IA5150A-I/O Series: 1 
NPort IA5250A-I/O Series: 2
Serial Standards RS-232/422/485 (DB9 male connector)
Serial Line Surge Protection 4 kV (level 4)
Off-line Port Buffering NPort IA5150A-I/O Series: 20 MB 
NPort IA5250A-I/O Series: 10 MB
• Serial Communication Parameters
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS and XON/XOFF
Baudrate 50 bps to 921.6 kbps
Serial Data Log 64 KB
• Serial Signals
RS-422 Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w Data+, Data-, GND
• Digital Input/Output
Digital Inputs • 4 channels for 6I/O models
• 8 channels for 12I/O models
Digital Outputs • 2 channels for 6I/O models
• 4 channels for 12I/O models
Isolation 3k VDC or 2k Vrms
• Digital Input
Sensor Type Wet Contact (NPN or PNP), Dry Contact
I/O Mode DI or Event Counter
Dry Contact • On: short to GND 
• Off: open
Wet Contact (DI to COM) • On: 10 to 30 VDC 
• Off: 0 to 3 VDC
Counter Frequency 20 Hz
Digital Filtering Time Interval Software Configurable
• Digital Output
Type Sink
I/O Mode DO or Pulse Output
Over-Voltage Protection 45 VDC
Over-Current Protection 2.6 A
Over-Temperature Shutdown 175°C (typical), 150°C (min.)
Current Rating 200 mA per channel
Storage Card Slot 1 microSD (SDHC) card slot; supports up to 32 GB
• Software
Network Protocols ICMP, IPv4, TCP, UDP, DHCP, Telnet, DNS, SNMP V1/V2c/V3, HTTP, SMTP, SNTP, SSH, HTTPS , Modbus TCP (for I/O communication)
Configuration Options Web Console, Serial Console, Telnet Console, Windows Utility
Secure Configuration Options HTTPS, SSH
Windows Real COM Drivers Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64), Windows Embedded CE 5.0/6.0, Windows XP Embedded
Fixed TTY Drivers SCO Unix, SCO OpenServer, UnixWare 7, QNX 4.25, QNX 6, Solaris 10, FreeBSD, AIX 5.x, HP-UX 11i, Mac OS X
Linux Real TTY Drivers Linux 2.4.x, 2.6.x, 3.x, 4.x
Android API Android 3.1.x and later
Utilities Device Search Utility and NPort Windows Driver manager
Management SNMP MIB-II
• Physical Characteristics
Housing Aluminum sheet metal
Weight NPort IA5150A-6I/O, NPort IA5150A-12I/O:
without the box: 740 g (1.63 lbs)
with the box: 910 g (2.01 lbs)
NPort IA5250A-6I/O, NPort IA5250A-12I/O: 
without the box: 753 g (1.66 lbs)
with the box: 923 g (2.03 lbs)
Dimensions 59.6 x 101.4 x 134 mm (2.35 x 4 x 5.28 in)
• Environmental Limits
Operating Temperature Standard Models: 0 to 60°C (32 to 131°F))
Storage Temperature -40 to 75°C (-40 to 167°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
• Power Requirements
Input Voltage 12 to 48 VDC
Power Consumption NPort IA5150A-6I/O, NPort IA5150A-12I/O: 300 mA @ 12 V 
NPort IA5250A-6I/O, NPort IA5250A-12I/O: 300 mA @ 12 V
Connector Terminal block
• Standards and Certifications
Safety UL 60950-1, EN 60950-1
EMC EN 61000-6-2/6-4
EMI CISPR 22, FCC Part 15B Class A
EMS IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m
IEC 61000-4-4 EFT: Power: 2 kV; Signal: 1 kV
IEC 61000-4-5 Surge: Power 1 kV; Signal: Ethernet (2 kV), Serial (4 kV)
IEC 61000-4-6 CS: 10 V
IEC 61000-4-8
• Reliability
Alert Tool RTC (real-time clock)
Automatic Reboot Trigger Built-in WDT (watchdog timer)
• MTBF (mean time between failures)
Time NPort IA5150A-6I/O: 456,558 hrs 
NPort IA5250A-6I/O: 433,352 hrs
NPort IA5150A-12I/O: 337,987 hrs
NPort IA5250A-12I/O: 325,408 hrs
Standard Telcordia (Bellcore) Standard TR/SR

Available Models

  Model No. Description
NPort IA5150A-6I/O 1-port RS-232/422/485 device server with 4DIs and 2DOs, 0 to 60°C operating temperature
NPort IA5250A-6I/O 2-port RS-232/422/485 device server with 4DIs and 2DOs, 0 to 60°C operating temperature
NPort IA5150A-12I/O 1-port RS-232/422/485 device server with 8 DIs and 4 DOs, 0 to 60°C operating temperature
NPort IA5250A-12I/O 2-port RS-232/422/485 device server with 8 DIs and 4 DOs, 0 to 60°C operating temperature

Optional Accessories

 DIN Rail Power Supplies
  Model No. Description
DR-4524 45W/2A DIN-rail 24 VDC power supply with universal 85 to 264 VAC or 120-370 VDC input, -10 to 50°C operating temperature
DR-75-24 75W/3.2A DIN-rail 24 VDC power supply with universal 85 to 264 VAC or 120-370 VDC input, -10 to 60°C operating temperature
DR-120-24 120W/5A DIN-rail 24 VDC power supply with universal 88 to 132 VAC or 176 to 264 VAC input by switch, or 248-370 VDC , -10 to 60°C operating temperature
 Wireless AP Mounting Kit
  Model No. Description
WK-51-01 Wall-mounting kit, 51mm wide
  Model No. Description
Mini DB9F-to-TB DB9 Female to Terminal Block connector