Network Communication UnitNU series


Communication Unit EtherNet/IP™ Compatible


Select Language




Communication unit that supports EtherNet/IPTM


Compliant standards

IEEE802.3 (10BASE-T), IEEE802.3u (100BASE-TX), IEEE802.3af (Power over Ethernet, Class 3)

Transmission rate

10Mbps (10BASE-T)100Mbps (100BASE-TX)

Transmission media

STP or category 3 or higher UTP (10BASE-T),*1 STP or category 5 or higher UTP (100BASE-TX)


Maximum cable length

100 m 328.1' (the length between this unit and the Ethernet switch)


Max. number of connection stages

4 (10BASE-T) 2 (100BASE-TX)*2


Compliant functions

Cyclic communication (implicit messages), message communication (explicit messages)

Number of connections


RPI (Transmission cycle)

0.5 to 10,000 ms (in units of 0.5 ms)

Tolerable communication bandwidth for cyclic communication


Message communication

Supports UCMM, Class 3

Conformance test

Supports version A7

Sensor connection

Connectable sensors

Sensor amplifier that supports N-bus*3

Number of connectable units

16 maximum*4

Power supply

Power is supplied by this unit through the sensor amplifier connection connector.

Allowable passing current

Total: 1,200 mA or less*5

Power during PoE power receiving

Supply voltage: 24 V ± 10%, supply current: 360 mA or less*6 (UL Class 2)*7

Indicator lamp

Link/activity indicator (LINK/ACT): green LED, module status indicator (MS): 2-color (green and red) LED, network status indicator (NS): 2-color (green and red) LED, sensor communication indicator (N-bus): 2-color (green and red) LED

Power voltage

24 VDC ± 10%, ripple (P-P): 10% or less (when using the power supply connector); 48 VDC (57 V maximum; during PoE power receiving)

Power consumption

1,500 mW or less (60 mA or less at 24 V)*8

Environmental resistance

Operating temperature range

-20 to +55°C -4 to 131°F, No freezing

Operating ambient humidity

35 to 85% RH (No condensation)


10 to 55 Hz, 1.5 mm 0.06" double amplitude for 2 hours in each of the X, Y, and Z directions

Pollution degree



Main unit case and dust cover: polycarbonate, power supply connector: polyamide (plug), PBT (socket)


Instruction manual, power supply connection connector, end unit × 2


approx 80 g (including connectors)

*1 When using the PoE power receiving function to form a connection, use an STP cable or category 5 or higher UTP cable.
*2 When using the switch, there is no limit on the number of units that can be connected.
*3 "N-bus" is the name of KEYENCE's wiring-saving system for sensor amplifiers.
*4 This varies depending on the connected sensor amplifiers.
*5 This is the current that can be supplied to the main unit or to the sensor amplifier connected to the main unit.
*6 This varies depending on the ambient usage temperature. (-20 to 45°C -4 to 113°F: 360 mA or less, 45 to 50°C 113 to 122°F: 260 mA or less, 50 to 55°C 122 to 131°F: 140 mA or less)
*7 Power which can be supplied to the sensor amplifi er when using the PoE power receiving function
*8 The current supplied to the connected sensor amplifiers is not included.

  • KEYENCE Information Network - Network Communication Unit
  • General Catalog Request
  • Trade Shows and Exhibitions
  • eNews Subscribe