Ultra-compact 1D and 2D Code Reader

SR-700 series

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Dedicated Communication Unit, RS-422A/485 Type N-R4

N-R4 - Dedicated Communication Unit, RS-422A/485 Type

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.


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Code reader power supply

5 VDC ±5% (650 mA)

Terminal block


Number of inputs

2 inputs (IN1 and IN2)

Input type

Bidirectional voltage input

Maximum rating

26.4 VDC

Minimum ON voltage

15 VDC

Maximum OFF current

1 mA


Number of outputs

4 outputs (OUT1 to 4)

Output type

Photo MOS relay output

Rated load

30 VDC, 100 mA

Leakage current when OFF

0.1 mA or less

Residual voltage when ON

1 V or less


Head port

Number of inputs

1 (12-pin, round connector)

Supported communication standards

RS-232C compliant

Communication speed

4,800, 9,600, 19,200, 31,250, 38,400, 57,600, 115,200 bps

Data bit length

7 or 8 bits

Stop bit length

1 bit or 2 bits

Parity check

None, odd, even

Communication specifications

Communication standard

RS-422A/RS-485 (maximum number of units that can be connected: 31) switchable


1 (detachable 5-pin connector)


Output interface

Total extension length

1.2km or less


Power voltage

24 VDC +10 %, -20 %

Current consumption

380 mA or less

Environmental resistance

Ambient temperature

0 to +50 °C 32 to 122 °F (No freezing)

Storage temperature

-20 to +60 °C -4 to 140 °F (No freezing)

Relative humidity

35 to 85 % RH (No condensation)

Operating environment

No dust or corrosive gases present

Vibration resistance

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


Approx. 135 g (excluding connector)

Data Sheet (PDF) Other Models