Bachmann|BEM211|Bus Expansion Module
Description
Bachmann BEM211 is a bus expansion module for M200 control systems, enabling high-speed distributed I/O connectivity up to 3 meters with minimal latency.
Features
- Supports daisy chain topology with up to 6 SubDevices
- Direct access to remote modules as local I/O
- Uses standard RJ45 connectors for easy wiring
- No special protocol required
Technical Specifications
Performance
- Max distance between stations: 3 m
- Access time: < 1.5 µs
- Supports up to 6 SubDevices
- Each SubDevice handles up to 15 M200 modules
Physical Layer
- Transmission medium: CAT7 special cable
- Connector type: RJ45
Power Supply
- Voltage range: 18 V DC to 34 V DC
- Power consumption: max 1.2 A at 24 V
- Nominal power: 17 W
- Output currents:
- +5 V: 2 A
- +15 V: 250 mA
- -15 V: 200 mA
- Reverse polarity protection: Yes
Environmental
- Operating temperature: -30 °C to +60 °C
- Storage temperature: -40 °C to +85 °C
- Humidity (operation/storage): 5–95 % RH non-condensing
- Pollution degree: 2 per IEC 60664-1
Certifications
- Approvals: CE, UKCA, cULu
Bachmann|BEM211|Bus Expansion Module



Bachmann|BEM211|Bus Expansion Module
Description
Bachmann BEM211 is a bus expansion module for M200 control systems, enabling high-speed distributed I/O connectivity up to 3 meters with minimal latency.
Features
- Supports daisy chain topology with up to 6 SubDevices
- Direct access to remote modules as local I/O
- Uses standard RJ45 connectors for easy wiring
- No special protocol required
Technical Specifications
Performance
- Max distance between stations: 3 m
- Access time: < 1.5 µs
- Supports up to 6 SubDevices
- Each SubDevice handles up to 15 M200 modules
Physical Layer
- Transmission medium: CAT7 special cable
- Connector type: RJ45
Power Supply
- Voltage range: 18 V DC to 34 V DC
- Power consumption: max 1.2 A at 24 V
- Nominal power: 17 W
- Output currents:
- +5 V: 2 A
- +15 V: 250 mA
- -15 V: 200 mA
- Reverse polarity protection: Yes
Environmental
- Operating temperature: -30 °C to +60 °C
- Storage temperature: -40 °C to +85 °C
- Humidity (operation/storage): 5–95 % RH non-condensing
- Pollution degree: 2 per IEC 60664-1
Certifications
- Approvals: CE, UKCA, cULu