Product Description for B&R 7CM211.7 Communication Module

1. Basic Profile

2. Mechanical & Power Specifications

• Mounting: Snap-in plug installation on all 7BP series System 2003 DIN rail backplanes (7BP701.1,7BP702.0,7BP703.0,7BP704.0,7BP707.0,7BP708.0,7BP709.0,7BP710.0)

• Power input: 24 V DC directly supplied by the backplane slot, no separate external power source

• Housing: Flame-retardant industrial plastic, IP20 protection rating (only valid inside sealed electrical cabinets)

• Operating ambient temperature: 0 °C ~ +60 °C

• Storage & transport temperature: −25 °C ~ +70 °C

• Low power consumption, minimal load on rack power supply

• Front panel multi-color LED indicators: Power, internal backplane bus link, external bus activity, fault alarm

3. Core Functions

1. Internal System Bus Connection

   Interacts with 7CP series System 2003 CPU via B&R proprietary high-speed backplane bus, transmitting program configurations, real-time process data and diagnostic signals synchronously with low latency.
2. External Fieldbus Gateway & Protocol Conversion

   Bidirectional data bridge between local control station and external automation devices:

• Upload: Machine running status, process values, fault codes to HMI, SCADA, master controllers

• Download: Motion setpoints, production recipes, parameter groups from upper systems to the local PCC controller

3. Multi-Channel Network Expansion

   Multiple 7CM211.7 modules can be fitted to one backplane to build several independent fieldbus networks for complex distributed control systems with multiple drives and monitoring hosts.
4. Galvanic Isolation & Circuit Protection

   Full electrical isolation between internal control bus and external fieldbus to eliminate ground loop interference. Integrated overvoltage, overcurrent and reverse wiring protection to shield internal circuits from surge and wiring faults.
5. Software Parameter Configuration

   All communication settings (station address, baud rate, protocol, data format) are set, compiled and downloaded through B&R Automation Studio; no hardware jumpers or trim adjustments required on the module.

4. Compatible System Hardware

1. 7CP series PCC CPU main modules

2. All 7BP rack backplanes

3. 7AF104.7 analog adapter bases + 7AI/7AM/7AO/7AT analog submodules

4. System 2003 digital input/output modules

5. 7AC020.9 blank slot covers, dedicated 24 V DC rack power supply

   Wiring requirement: Shielded twisted-pair cables must be used for external fieldbus connections to suppress electromagnetic interference from inverters and servo drives.

5. Typical Application Equipment

6. Quality, Commissioning & Maintenance

• Traceability: Unique factory serial number stored in B&R Austrian production database for full supply chain tracking

• Refurbished units undergo full pre-delivery tests: Contact continuity, isolation performance, CPU bus compatibility, LED function, surge resistance, with 12–24 month supplier warranty

• Commissioning steps: Insert module into free backplane slot → Wire shielded bus cables to screw terminals → Configure communication parameters in Automation Studio and download project → Verify link status via front LEDs

• Forbidden operations: Unauthorized disassembly of internal PCB or circuit modification voids warranty and risks system communication failure

• Storage: Keep in dry, constant-temperature, low-humidity warehouses to prevent terminal oxidation and plastic aging

• Replacement note: Must match System 2003 bus protocol; cannot interchange with modules for other B&R control platforms.