4 Channel DI/DO Module DMB 96700

4 independent controllable digital I/O channels, Modbus RTU

  • 4 channels,  independent controllable digital I/Os
  • Each channel programmable as input or output
  • Programmable switch-ON and switch-OFF behavior
  • Extensive programmable operating functions
  • Protective 5-way separation up to 300 V AC/DC, test voltage 3 kV
  • Status indication for each channel
  • In-Rail-Bus Connector for Modbus and power supply
  • Extremly slim, only 6.2 mm installation width
  • Made in Germany, 5 Years Warranty

The Modbus 4-channel DI/DO module has four independently configurable inputs/outputs. The inputs can be used either as a binary, frequency or counter input with three selectable input levels. The open collector outputs are usable as binary, frequency, pulse or PWM outputs. Various time functions can be used to influence the switching behaviour. All parameters can be set via the Modbus RTU interface. A subset of the settings is available via DIP switches.

The 5-way isolation ensures reliable decoupling of the inputs/outputs from the processing circuit and the power supply. Power supply and Modbus RTU must be connected via the In-Rail-Bus connection (see accessories).

Technical Data


Input level 5 V, 12 V, 24 V
Input resistance 4 kOhm
Input voltage < 32 V DC
Min. pulse width 0.5 ms
Functions Binary
Frequency: 0.1 Hz to 1 kHz
Counter: 16 / 32 bit


Output type Open collector
Max. voltage / current 32 V DC, 100 mA
Residual voltage < 1.5 V DC
Min. pulse width 0.3 ms
Functions Binary
Frequency: 0.1 Hz to 1 kHz
Pulse: 1 to 60000 /min
PWM: 500 Hz, 10 to 90 %


Protocol Modbus RTU (RS485)
Module addressing 1 to 247
Response delay 1 to 1000 ms
Baudrate 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Configuration Parity: Even, Odd, None with 2 stop bits, None with 1 stop bit
Connectivity Up to 247 DRAGO Modbus devices without additional repeater (1/8 Load)
Indication Yellow LED on front panel

General Data

Indication Yellow LED for each channel on front panel
Test voltage 3 kV AC, 50 Hz, 1 min., All channels against each other and against Modbus/power supply
Protection against dangerous body currents1) Protective Separation by reinforced insulation acc. to DIN EN 61010-1 up to 300 V AC/DC for overvoltage category II and contamination class 2 between input and Modbus/power supply
Ambient temperature Operation: -25 °C to +70 °C (-13 to +158 °F)
Transport and storage: -40 °C to +85 °C (-40 to +185 °F)
Power supply 24 V DC, voltage range 16.8 V to 31.2 V DC, approx. 0.5 W
EMC2) EN 61326-1
Construction 6.2 mm (0.244") housing, protection type: IP 20, mounting on 35 mm DIN rail acc. to EN 60715
(captive plus-minus clamp screws)
Solid: 0.5 mm2 - 4 mm2 / AWG 20-12
Fine-stranded: 0.5 mm2 - 2.5 mm2 / AWG 20-14
Stripped length: 6-8 mm / 0.28 in
Screw terminal torque 0.8 Nm / 7 lbf in
Weight Approx. 70 g
  1. As far as relevant the standards and rules mentioned above are considered by development and production of our devices. In addition relevant assembly rules are to be considered by installation of our devices in other equipment. For applications with high working voltages, take measures to prevent accidental contact and make sure that there is sufficient distance or insulation between adjacent situated devices.
  2. Minor deviations possible during interference

Block diagram

<p>Modbus 4-Kanal DI/DO Modul DMB 96700<br>Modbus 4 Channel DI/DO Module DMB 96700</p>



Terminal assignments

1 + Channel 1
2 Channel 1
3 + Channel 2
4 Channel 2
5 + Channel 3
6 Channel 3
7 + Channel 4
8 Channel 4
A   Modbus A
B   Modbus B
C Power supply
D + Power supply


Product line

Product Order No.
Modbus 4 Channel DI/DO Module,
In-Rail-Bus for power supply and Modbus connection
DMB 96700 B
In-Rail-Bus see accessories  
Subject to change!
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