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Short description
I/O module IO-Link master with 4 IO-Link interfaces
General information
B&R ID code 0xA38E
Status indicators IO-Link, operating state, module status
Module run/error Yes, using status LED and software
IO-Link operating state Yes, using status LED and software
C/Q status Yes, using status LED and software
Cable specification
Cable type 3-pin standard sensor cable
Cable length Max. 20 m
Line capacitance Max. 3 nF
Loop resistance Max. 6 Ω
Power consumption
Bus 0.01 W
Internal I/O 1.6 W
Additional power dissipation caused by actuators (resistive) [W] -
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
KC Yes
Sensor/Actuator power supply
Voltage I/O supply minus voltage drop for short circuit protection
Voltage drop for short-circuit protection at 0.3 A Max. 1 VDC
Power consumption Max. 9 W per interface
Short-circuit proof Yes
IO-Link in master mode
Transfer rates
COM1 4.8 kbaud
COM2 38.4 kbaud
COM3 230.4 kbaud
Limit values for COM3
Max. connection capacity 47 nF (cable + device)
Max. load 100 Ω / 0.3 A
Data format 1 start bit, 8 data bits, 1 parity bit (even), 1 stop bit
Bus level 24 VDC (active), 0 VDC (resting voltage)
IO-Link device power supply 24 VDC / max. 0.3 A per interface (protected)
IO-Link in master mode or in SIO mode "digital output"
Variant Bipolar, positive and negative switching
Diagnostics Output monitoring with 100 ns delay and internal semiconductor protection with 100 µs delay
Peak short-circuit current <1.5 A
Residual voltage <1.5 VDC at nominal current 0.2 A
Switching voltage I/O supply minus voltage drop for short circuit protection and semiconductor switch
Voltage drop on semiconductor switch Max. 1.5 VDC at 0.2 A
Switching frequency Typ. 25 kHz
300 kHz in IO-Link master mode
Switching delay
0 → 1 <10 µs
1 → 0 <10 µs
Switch-on in the event of overload shutdown or short-circuit shutdown Approx. 10 ms (depends on the module temperature)
Braking voltage when switching off inductive loads Typ. 52 VDC
Insulation voltage between IO-Link and bus 500 Veff
IO-Link in SIO mode "Digital output"
Nominal voltage 24 VDC
Nominal output current 0.2 A
Total nominal current 0.4 A
Output circuit Sink or source
Output protection Thermal cutoff if overcurrent or short circuit occurs, integrated protection for switching inductances
Actuator power supply 24 VDC / max. 0.3 A per interface (protected)
IO-Link in SIO mode "digital input"
Nominal voltage 24 VDC
Input filter
Hardware 100 ns
Software -
Input circuit Sink
Sensor power supply 24 VDC / max. 0.3 A per interface (protected)
Input voltage 24 VDC -15% / +20%
Input current at 24 VDC Typ. 5 mA
Input resistance Typ. 4.8 kΩ
Switching threshold
Low <8 VDC
High >13 VDC
Insulation voltage between IO-Link and bus 500 Veff
Electrical properties
Electrical isolation
Bus isolated from IO-Link

IO-Link not isolated from IO-Link
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitations
>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 0 to 55°C
Vertical mounting orientation 0 to 45°C
Derating -
Storage -25 to 70°C
Transport -25 to 70°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
  • 4 IO-Link interfaces per module
  • Each interface can be configured as a standard input or output
  • Seamless integration in POWERLINK
  • Supports all transfer rates

IO-Link is a standardized communication system for connecting intelligent sensors and actuators in an automation system. The standardization includes electrical connection data as well as a digital communication protocol, which is used by the sensors and actuators in the automation system for data exchange.

An IO-Link system consists of an IO-Link master and one or more IO-Link devices, i.e. sensors and actuators. The IO-Link master makes the interface available for higher level control and controls communication with the connected IO-Link devices.

An IO-Link device is an intelligent sensor or actuator. With regard to IO-Link, "intelligent" means that a device possesses a series number or parameter data (sensitivity, switching delays or characteristic curves), which can be written to or read via the IO-Link protocol.

Process optimization

The use of intelligent sensors and actuators contributes to process optimization. Process optimization means that downtimes should be kept as short as possible. These consist mainly of standstills due to errors and setup times.

Integrated communication down to the IO-Link devices offers many advantages in error diagnostics. Errors are detected much faster than before. If a sensor or actuator must be replaced, lengthy configuration work is no longer necessary after the change thanks to a potentiometer, or a configuration tool and laptop. After changing the sensor/actuator, the parameters are automatically transferred to the sensor.

This parameter download is not only beneficial when errors occur. It can also be used for changing parameters when a load change is performed. This shortens setup times, making product changes and small batches more economical.

Integration of IO-Link in X20 System

IO-Link is integrated in the X20 system using this digital module. All 4 channels are IO-Link interfaces, but can also be used as standard inputs or outputs. The specified 3-wire connections can be ideally implemented thanks to the X20 connector system with 12 terminal points per module. All specified transfer rates are also supported.

POWERLINK integration

IO-Link doesn't stop at the I/O module. It must be integrated in the higher-level bus system to fully utilize the benefits. When using POWERLINK, access is made possible via device description files in XML format.

Obligatoriske tilbehør
Bus modules
X20BM11 X20 bus module, 24 VDC keyed, internal I/O supply continuous
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 (X20DS4387) EXE / 1 MB
V3.0 HW Upgrade (X20DS4387) EXE / 1 MB
V4.0 HW Upgrade (X20DS4387) EXE / 771 KB
Certifikater Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
E115267 UL CoC X20 PDF / 847 KB
FTZU 09 ATEX 0083X PDF / 697 KB
X20, X67 KC certificates PDF / 6 MB
Dokumentation Version (Date) Download
Data sheet X20DS4387 PDF / 340 KB
X20 System User´s Manual PDF / 56 MB
E-CAD (Electro eller EPLAN Templates) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 161 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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