Isolated Module Digital Input Output Module on MODBUS RS485 - DAT3140

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  • Datexel Isolated Module Digital Input Output Module on MODBUS RS485 - DAT3140
  • Isolated Module Digital Input Output Module on MODBUS RS485 - DAT3140


Datexel Isolated Module Digital Input Output Module on MODBUS RS485 - DAT3140

4 digital inputs, 8 digital outputs type NPN, Watch-Dog alarm, DIN rail mounting, UL / CE mark - High Quality

The device DAT 3140 is able to acquire up to 4 digital inputs and to drive up to 8 transistor outputs type NPN. The data are transmitted with MODBUS RTU/MODBUS ASCII protocol on the RS-485 network.

The device guarantees high accuracy and stable measure versus time and temperature.

To ensure the plant safety, two Watch-Dog timer alarms are provided.

The isolation between the parts of circuit removes eventual ground-loop effects, allowing the use of the device even in the heavy environmental conditions.

The DAT 3140 is in compliance with the Directive UL 61010-1 for US market and with the Directive CSA C22.2 No 61010-1 for the Canadian market.

The device is housed in a rough self-extinguishing plastic container which, thanks to its thin profile of 17.5mm only, allows a high density mounting on EN-50022 standard DIN rail.


The DAT3140 is designed to work with the MODBUS RTU/MODBUS ASCII protocol: standard protocol in field-bus; allows to directly interface DAT3000 series devices to the larger part of PLCs and SCADA applications available on the market.

The advantages and features for Datexel Isolated Module DAT3140

  • Field-Bus remote data acquisition
  • Modbus Slave device on RS-485
  • Modbus RTU/ Modbus ASCII protocol
  • 4 digital inputs
  • 8 digital outputs type NPN
  • Watch-Dog alarm
  • Galvanic isolation on all ways
  • High accuracy
  • UL / CE mark
  • In compliance to EN-50022 DIN rail mounting

DIGITAL INPUTS Datexel Isolated Module DAT3140

  • Number of Channels 4
  • Input voltage OFF State : 0÷3 V
  • (bipolar) ON State : 10÷30 V
  • Input Impedance 4.7 KOhm
  • Sample time 20 ms


  • Number of Channels 8
  • Type NPN
  • Max. Voltage 30 Vdc
  • Max. Load 600 mA per channel
  • 3A per module
  • Over-current protection NO

Data Transmission

  • Baud Rate 38.4 Kbps
  • Max. distance 1.2 Km – 4000 ft

Power Supply

  • Power supply voltage 10 .. 30 Vdc
  • Reverse polarity protection 60 Vdc max
  • Current consumption 45 mA max.


  • Inputs – Outputs 1000 Vac 50 Hz, 1 min.
  • Inputs – RS485 2000 Vac 50 Hz, 1 min.
  • Inputs – Supply 2000 Vac 50 Hz, 1 min.
  • Outputs – RS485 2000 Vac 50 Hz, 1 min.
  • Outputs – Supply 2000 Vac 50 Hz, 1 min.
  • RS-485 – Supply 2000 Vac 50 Hz, 1 min.

Environmental Conditions

  • Operative Temperature -10°C .. +60°C
  • UL Operative Temperature -10°C .. +40°C
  • Storage Temperature -40°C.. +85°C
  • Humidity (not condensed) 0 .. 90 %
  • Maximum Altitude 2000 m
  • Installation Indoor
  • Category of installation II
  • Pollution Degree 2

Mechanical specifications

  • Material Self-extinguish plastic
  • IP Code IP20
  • Wiring wires with diameter 0.8÷2.1 mm2 /AWG 14-18
  • Tightening Torque 0.5 N m
  • Mounting in compliance with DIN rail standard EN-50022
  • Weight about 150 g

EMC (for industrial environments)

  • Immunity EN 61000-6-2, Emission EN 61000-6-4


  • US Standard UL 61010-1


Series Information

“DAT3000 SERIES” data acquisition and control modules

The distributed I/O modules of the DAT3000 series represent a complete solution for the acquisition and control of the analog and digital I/O signals.

The series is composed of:

• Serial line converters and repeaters (DAT3580, DAT3580 USB, DAT3580 MBTCP, DAT3590).

• Modules for digital inputs and outputs (DAT3130, DAT3140, DAT3148/8, DAT3148/12, DAT3188/4, DAT3188/8).

• Modules for analog inputs (DAT3011, DAT3014, DAT3015, DAT3016, DAT3017, DAT3018, DAT3019).

• Modules with analog outputs (DAT3022, DAT3024, DAT3028).

The devices communicate on the RS-485 serial line by the MODBUS RTU communication protocol and are able to communicate with the host computer on multipoint net using only two wires

About Datexel:

Founded in 1992 from the commitment and aspiration of several partners as a small provincial company, through the years DATEXEL has become an established reality on Italian and international markets as a manufacturer of electronic equipment for industrial automation and control process.

The range of DATEXEL products includes: Transmitters, signal and temperature Converters (both analogue and digital), galvanic Isolators, signal Splitters, I/O Modules, Trip Amplifiers, Power Supply Units, current loop Isolators, analogue and digital Displays.


To View Data Sheet for Datexel Isolated Module Digital Input Output Module on MODBUS RS485 - DAT3140 Please Click Here
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Warranty Information

One Year Warranty
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Additional Information

Digital Input:
4 Channels
Off State 0-3 V, On State 10-30V
8 Channels
30 Vdc 600mA per channel 3 A per Module
RS485 Modbus
Power Supply:
10 - 30 Vdc. Reverse polarity protection 60 Vdc
Current Consumption:
30 mA
Temperature rating::
Operative Temperature -4°F +140°F -20°C +60°C
Storage Temperature:
-40°F +185°F -40°C +85°C.
Humidity: (not condensing) 0-90%.:
Humidity: (not condensing) 0-90%.
Material self-extinguishing
Material self-extinguishing.
W x L x H 3 3/4X 3 1/2 X 1 7/8 inch, 90 x 74 x 48mm
150 g
Immunity EN 61000-6-2, Emission EN 61000-6-4
Between Modbus Master, Slave/Power supply 1500Vac, 50Hz, 1 Minute.
PC Configurable
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