B&R X20DS438A: High-Performance IO-Link Master Module
2.169,00 €
- 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
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Description
The B&R X20DS438A is an IO-Link master digital signal module. Its purpose is to facilitate the transfer of data between PLCs and other IO-Link-compatible devices used in industrial automation, such as sensors and actuators.
Each of the module’s four channels can be used as an input or an output. Fast cycle times are provided for high-speed data transfer, and it is compatible with the IO-Link v1.1 communication standard. The module has built-in diagnostic tools and status monitoring functions to make system upkeep and troubleshooting less of a hassle.
The B&R X20DS438A is a module from the company’s X20 series, which is known for its reliability and adaptability in industrial automation settings. The X20 modules are very modular, so users can add new features as they see fit.
The B&R X20DS438A is a master IO-Link module that can be used in a variety of automation scenarios in the industrial sector.
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 |
Diagnostics | |
Module run/error | Yes, using LED status indicator and software |
IO-Link operating state | Yes, using LED status indicator and software |
C/Q status | Yes, using LED status indicator 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] | – |
Certifications | |
CE | Yes |
UKCA | 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 |
EAC | Yes |
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 shutdown in the event of overcurrent or short circuit, integrated protection for switching inductive loads |
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 limitation |
>2000 m | Reduction of ambient temperature by 0.5°C per 100 m |
Degree of protection per EN 60529 | IP20 |
Ambient conditions
Temperature | |
Operation | |
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+0.2mm |
Additional information
Brand | B&R |
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Condition | New |

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