Short description
I/O module Measurement of ambient conditions:
Temperature in the module, relative humidity, vibration, shock, position, operating hours, power-on cycles
2 digital inputs, 1 digital output, 2 Pt1000 temperature inputs
General information
B&R ID code 0x2A02
Status indicators I/O function per channel, overload, memory access, operating state, module status
Module run/error Yes, using LED status indicator and software
Output Yes, using LED status indicator and software (output error status)
Blackout mode
Scope Module
Function Module functionality
Standalone mode No
Power consumption
Bus 0.4 W
Internal I/O 0.1 W
Additional power dissipation caused by actuators (resistive) [W] +0.075
Application memory
Type 512 kB flash memory
Sectors 8 sectors, 64 kB each
Data retention 20 years at 55°C
Guaranteed erase/write cycles 100,000 per sector
Error-correcting code (ECC) No
Write protection No
CE Yes
Digital inputs
Quantity 2
Nominal voltage 24 VDC
Input voltage 24 VDC -15% / +20%
Input current at 24 VDC Typ. 3.75 mA
Input circuit Sink
Input filter
Hardware ≤100 μs
Software Default 1 ms, configurable between 0 and 25 ms in 0.2 ms increments
Connection type 1-wire connections
Input resistance Typ. 6.4 kΩ
Switching threshold
Low <5 VDC
High >15 VDC
Insulation voltage between channel and bus 500 Veff
Resistance measurement temperature inputs
Quantity 2
Input Resistance measurement for 2-wire connections
Digital converter resolution 12-bit
Filter time Configurable
Conversion time 1 ms for all inputs
Output format INT
Pt1000 -40 to 125°C
Input filter Averaging with clipping function
Linearization method Internal
Permissible input signal Short-term ±15 V
Max. gain drift 0.0003 %/°C
Max. offset drift 0.06 %/°C
Nonlinearity <0.010%
Temperature sensor resolution
Pt1000 1 LSB = 0.1°C
Temperature measurement monitoring
Range undershoot 0x8001
Range overshoot 0x7FFF
Open circuit 0x7FFF
General fault 0x8000
Open inputs 0x7FFF
Temperature and humidity sensor
Sensor position Module-internal
Sampling rate 1 s
Temperature measurement
Measurement range -25 to 125°C
Resolution 0.1°C/LSB
Max. error ±0.3°C
Humidity measurement
Measurement range 5 to 95%
Resolution 1%/LSB
Max. error ±2% at 10 to 80% relative humidity
±3% at <10 and >80% relative humidity
Acceleration and angle sensor
Sensor position Module-internal
Sampling rate Typ. 10 ms
Acceleration measurement
Measurement range ±16 g
Resolution 0.488 mg/LSB
Linearity over temperature ±1% at -40 to 85°C
Offset calibration error ±40 mg
Angular velocity measurement
Measurement range ±2000 dps
Resolution ±70 mdps per LSB
Linearity over temperature ±1.5% at -40 to 85°C
Offset calibration error ±10 dps
Digital outputs
Quantity 1
Variant Current-sourcing FET
Nominal voltage 24 VDC
Switching voltage 24 VDC -15% / +20%
Nominal output current 0.5 A
Connection type 1- or 2-wire connections
Output circuit Source
Diagnostic status Output monitoring with 10 ms delay
Leakage current when the output is switched off 120 µA
RDS(on) 300 mΩ
Switching delay
0 → 1 <300 µs
1 → 0 <300 µs
Switching frequency
Resistive load Max. 100 Hz
Inductive load See section "Switching inductive loads".
Insulation voltage between channel and bus 500 Veff
Protective measures
Short-circuit proof Yes
Overload-proof Temporary overload
Electrical properties
Electrical isolation Analog channel not isolated from bus
Digital channel isolated from bus
Digital channel not isolated from digital 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 -
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation Up to 100%, 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 X20cBM11 separately.
Pitch 12.5+0.2 mm
Material number:
  • Measurement and evaluation of the ambient conditions in the control cabinet
  • Recording ambient conditions
  • Recording operating hours and power-on cycles
  • Saving user data directly on the module
  • Supports blackout mode
  • 2 inputs for PT1000 temperature sensors
  • 2 digital inputs 24 VDC
  • 1 digital output 24 VDC

The module is designed for measuring ambient conditions in the control cabinet as well as recording operating hours and power-on cycles. In addition, the module offers the option of storing user data directly on the module, is equipped with inputs/outputs and supports blackout mode.

Measuring and evaluating ambient conditions

The ambient conditions are continuously evaluated by the module. The duration in which individual parameters are within certain ranges is stored internally. This makes it possible, for example, to determine how long the system remained in a certain temperature range. The histograms recorded by the module can be read out by the user.

Internal module memory for user data

With 512 kB nonvolatile user memory (flash), data from the application can be saved directly on the module and also read back from the module. The data is therefore retained after the module or CPU is restarted and remains with the module in the event that the module is connected to another machine or system, for example. Data retention is maintenance-free – without batteries.


The module is equipped with 2 inputs for Pt1000 temperature sensors, 2 digital inputs (24 VDC) and 1 digital output (24 VDC).

Blackout mode

The integrated blackout mode ensures that module functionality is maintained even in the event of network failure.

Mandatory Accessories
Bus modules
X20cBM11 X20 bus module, coated, 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
V4.0 HW Upgrade (X20cCMR011) EXE / 3 MB
Documentation Version (Date) Download
Data sheet X20(c)CMR011 PDF / 3 MB
Installation- / EMC-Guide PDF / 20 MB
X20 System User´s Manual PDF / 7 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
Makro-/Artikeldaten 4.0.2 (X20cCMR011) EXE / 648 KB
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

Please choose country and language

B&R Logo