Short description
I/O module 4 digital input channels, 4 digital channels configurable as inputs or outputs, 4 edge detection units with timestamp function (each usable as pulse duration or differential time measurement, 4 history elements per unit), 4x microsecond-accurate edge generation (each up to 4 edges per unit), 4x oversampling (input and output signal)
General information
B&R ID code 0xA93B
Status indicators I/O function per channel, operating state, module status
Module run/error Yes, using LED status indicator and software
Outputs Yes, using LED status indicator and software (output state)
Power consumption
Bus 0.01 W
Internal I/O 1.5 W
Additional power dissipation caused by actuators (resistive) [W] -
Type of signal lines Shielded lines must be used for all signal lines.
CE Yes
ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc
IP20, Ta (see X20 user's manual)
FTZÚ 09 ATEX 0083X
UL cULus E115267
Industrial control equipment
HazLoc cCSAus 244665
Process control equipment
for hazardous locations
Class I, Division 2, Groups ABCD, T5
DNV Temperature: B (0 - 55°C)
Humidity: B (up to 100%)
Vibration: B (4 g)
EMC: B (bridge and open deck)
KR Yes
KC Yes
Digital inputs
Quantity 4 + 4, configuration as input or output using software
Nominal voltage 24 VDC
Input voltage 24 VDC -15% / +20%
Input current at 24 VDC Approx. 1.3 mA
Input circuit Sink
Input resistance 18.4 kΩ
Additional functions 4 edge detection units with timestamp function, 4x input oversampling
Input frequency 40 kHz
Switching threshold
Low <5 VDC
High >15 VDC
Insulation voltage between channel and bus 500 Veff
Digital outputs
Quantity Up to 4, configuration as input or output using software
Variant Push / Pull / Push-Pull
Nominal voltage 24 VDC
Switching voltage 24 VDC -15% / +20%
Nominal output current 0.1 A
Total nominal current 0.4 A
Output circuit Sink and/or source
Output protection Thermal shutdown in the event of overcurrent or short circuit, integrated protection for switching inductive loads
Diagnostic status Output monitoring
Leakage current when the output is switched off Max. 25 µA
RDS(on) 150 mΩ
Residual voltage <0.9 V at 0.1 A nominal current
Peak short-circuit current <10 A
Switch-on in the event of overload shutdown or short-circuit shutdown Approx. 10 ms (depends on the module temperature)
Switching delay
0 → 1 <2 µs
1 → 0 <2 µs
Switching frequency
Resistive load Max. 24 kHz
Inductive load See section "Switching inductive loads".
Braking voltage when switching off inductive loads Switching voltage + 0.6 VDC
Insulation voltage between channel and bus 500 Veff
Additional functions 4x microsecond-accurate edge generation, 4x output oversampling
Edge detection units
Quantity 4
Operating mode 4 pulse duration measurements, relative or absolute moments of input edges in microsecond resolution,
4 history elements per unit
Counter size 16/32-bit
Input frequency (max.) 40 kHz
Resolution 125 ns timestamp function
Signal form Square wave pulse
Sensor power supply Module-internal, max. 600 mA
Edge generation units
Quantity 4
Edge generation
Absolute Absolute to NetTime
Relative Relative to other edges
Offset at relative edge generation
Range of values 16-bit or 32-bit value
Resolution 1 µs
Actuator power supply Module-internal, max. 600 mA
Quantity 4
Sample time 25 to 255 µs
Data volume Up to 64 bits per X2X Link cycle in the input and output direction
Electrical properties
Electrical isolation
Channel isolated from bus

Channel not isolated from channel
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitation
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP20
Ambient conditions
Horizontal mounting orientation -25 to 60°C
Vertical mounting orientation -25 to 50°C
Derating See section "Derating".
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order 1x terminal block X20TB12 separately.
Order 1x bus module X20BM11 separately.
Pitch 12.5+0.2 mm
Material number:
  • 4 digital input channels
  • 4 digital channels, configurable as inputs or outputs
  • 4 edge detection units with timestamp function (each usable as pulse duration or differential time measurement, 4 history elements per unit)
  • 4x precise edge generation down to the µs (up to four edges per unit in each case)
  • 4x oversampling (input and output signal)
  • 24 VDC and GND for sensor/actuator supply
  • NetTime timestamp: Input data, edge detection, edge generation

This module is a digital signal processor module that is used for detecting and evaluating input edges and for creating edges.

An additional essential feature is the module's integrated timestamp function. This allows fast input edges such as registration marks to be detected independently of the system's X2X Link cycle time and provided with a precise input stamp. In the other direction, the module sets outputs at exactly specified times. This is done with a resolution up to 125 ns.

In oversampling mode, the module acquires very short input patters whose low or high phases are shorter than the X2X Link cycle time. Similarly, output patterns (e.g. drum sequencers) can also be output with extremely short high/low times. Oversampling can take place with a scan rate of up to 25 μs.

If necessary, up to 4 events per edge detection unit can be stored in a buffer (history elements).

Other functions include pulse duration measuring and differential time measuring.

Mandatory Accessories
Bus modules
X20BM11 X20 bus module, 24 VDC keyed, internal I/O power supply connected through
X20BM15 X20 bus module, with node number switch, 24 VDC keyed, internal I/O power supply connected through
Terminal blocks
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V2.7 HW Upgrade (X20DS4389) EXE / 2 MB
V3.0 HW Upgrade (X20DS4389) EXE / 4 MB
V4.0 HW Upgrade (X20DS4389) EXE / 2 MB
Certificates Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 149 KB
ABS Certificate of Product Design Assessment - X20 IO Series PDF / 2 MB
DNV Type Approval Certificate - X20 PDF / 193 KB
E115267 UL CoC X20 PDF / 654 KB
FTZU 09 ATEX 0083X PDF / 771 KB
KR Type Approval Certificate MIL39390-AC003 (X20 System) PDF / 758 KB
Lloyds Register PDF / 502 KB
RINA Type Approval Certificate - X20 / Power Panel T30 PDF / 1 MB
Safe cutoff of potential groups PDF / 735 KB
X20, X67 KC certificates PDF / 6 MB
Documentation Version (Date) Download
Datasheet X20DS4389 PDF / 1 MB
Installation- / EMC-Guide PDF / 20 MB
X20 System User´s Manual PDF / 7 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 158 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File DXF/STEP X20 Electronic module ZIP / 10 KB
3D File STEP X20 I/O-Slice ZIP / 872 KB
Dimensions PDF X20 Electronic module PDF / 3 KB

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