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Short description
I/O module IO-Link master with 4 IO-Link interfaces
General information
B&R ID code 0xCAC0
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, unshielded
Cable length Max. 20 m
Line capacitance Max. 3 nF
Loop resistance Max. 6 Ω
Power consumption
Bus 0.01 W
Internal I/O 0.71 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
Sensor/Actuator power supply
Voltage I/O power supply minus voltage drop for short circuit protection
Voltage drop for short-circuit protection at 0.5 A Max. 0.3 V
Power consumption Max. 12 W per IO-Link interface
Short-circuit proof Yes
Overload protection
Switch-off delay Configurable using software
Switch-off duration Configurable using software
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 22 nF (cable + IO-Link device)
Max. load 96 Ω / 250 mA
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 in master mode or in SIO mode "digital output"
Variant Bipolar, positive and negative switching
Peak short-circuit current <1.3 A
Residual voltage <0.7 VDC at nominal current 0.25 A
Switching voltage I/O power supply minus voltage drop for short circuit protection and semiconductor switch
Voltage drop on semiconductor switch Max. 0.5 VDC at 0.25 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 Configurable with software
Insulation voltage between IO-Link and bus 500 VEff
IO-Link in SIO mode "Digital output"
Nominal voltage 24 VDC
Nominal output current 0.25 A
Total nominal current Max. 1 A
Output circuit Sink or source
Switching frequency (resistive load) Max. 500 Hz
Output protection Thermal cutoff if overcurrent or short circuit occurs, integrated protection for switching inductances
IO-Link in SIO mode "digital input"
Nominal voltage 24 VDC
Input characteristics per EN 61131-2 Type 1
Input filter
Hardware 300 ns
Software -
Input circuit Sink
Input voltage 24 VDC -15% / +20%
Input current at 24 VDC Typ. 4 mA
Input resistance Typ. 6 kΩ
Switching threshold
Low <5 VDC
High >15 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 -25 to 60°C
Vertical mounting orientation -25 to 50°C
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 IO-Link devices
  • 4 digital channels, can be configured as input or output
  • 24 VDC and GND for sensor/actuator supply
  • NetTime timestamps: IO-Link data

The module is an IO-Link master that allows intelligent sensors and actuators to be connected to the X20 system in accordance with the IO-Link standard. The module can be used to operate up to 4 IO-Link devices. All IO-Link channels can be used either as standard digital inputs or outputs.

Mandatory Accessories
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 supply continuous
Terminal blocks
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V3.0 HW Upgrade (X20DS438A) EXE / 3 MB
V4.0 HW Upgrade (X20DS438A) EXE / 3 MB
Certificates 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
Documentation Version (Date) Download
Datasheet X20(c)DS438A PDF / 1 MB
X20 System User´s Manual PDF / 56 MB
E-CAD (Electro or 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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