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Technical Specifications:
| Parameter | Value |
|---|---|
| PLC Type | Embedded Soft-PLC (IEC 61131-3 Compliant) |
| Programming Languages | Ladder Diagram (LD), Structured Text (ST), Function Block Diagram (FBD), Sequential Function Chart (SFC), Instruction List (IL) |
| Digital Inputs (Integrated) | 16 DI (24 V DC, Sink/Source Configurable) |
| Digital Outputs (Integrated) | 16 DO (24 V DC, 0.5 A, PNP) |
| Analog Inputs (Integrated) | 4 AI (0-10 V DC, 12-Bit Resolution) |
| Analog Outputs (Integrated) | 2 AO (0-10 V DC, 12-Bit Resolution) |
| Program Memory | 64 KB (User Program) + 32 KB (Data) |
| Cycle Time (Motion Control) | 1 ms (Standard), 250 µs (High-Speed Mode) |
| Communication Interfaces | EtherCAT (Master/Slave), PROFINET RT, CANopen, RS-485 (Modbus RTU) |
| Supply Voltage | 24 V DC ±10% |
| Current Consumption | Maximum 2.0 A (Full I/O Load) |
| Operating Temperature | 0°C to +50°C |
| Protection Rating | IP20 (Panel/Cabinet Mounting) |
| Dimensions (W × H × D) | 150 mm × 120 mm × 60 mm |
| Weight | Approximately 0.8 kg |
| Mounting | DIN Rail (EN 60715) or Panel Mount (Screw Holes) |
Functional Features:
- Standalone Motion Control — Executes motion programs (positioning, velocity, torque) without external PLC
- IEC 61131-3 Programming — Full support for all five IEC programming languages
- Integrated Motion Functions — PTP (Point-to-Point), CSP (Cam Synchronized Positioning), Electronic Gearing, Electronic Cam
- Safety Functions — STO (Safe Torque Off), SS1 (Safe Stop 1), SLS (Safely Limited Speed) per EN 61800-5-2
- Recipe Management — Up to 256 Motion Recipes Stored in Non-Volatile Memory
- Web Server — Built-in HTTP server for remote diagnostics and parameterization
- Data Logging — 10,000 Sample Buffer for process data recording
Structure & Material Composition:
- Housing: Polycarbonate (PC), UL94 V-0, RAL 7035 Gray
- PCB: 4-Layer FR-4, Gold-Plated Contacts, Conformal Coated
- Connectors: Pluggable Screw Terminals (5.08 mm Pitch), M12 for EtherCAT
- Display: 4-Digit 7-Segment LED (Status/Diagnostic)
- SD Card Slot: For Program Backup and Data Logging (MicroSD, Up to 32 GB)
Working Principle:
The BM4-O-PLC-01 embeds a real-time capable soft-PLC within the BM4 servo drive ecosystem. The PLC runtime executes user programs written in IEC 61131-3 languages at a deterministic cycle time (1 ms standard). Motion control functions (PTP, CSP, etc.) are executed directly on the module, sending setpoints to the BM4 servo drive via EtherCAT or internal fieldbus. The module handles all I/O processing, logic execution, communication, and safety monitoring autonomously, eliminating the need for a separate external PLC in single-axis or simple multi-axis applications.
Applicable Industries:
- Standalone Machine Control (No External PLC Required)
- Retrofit of Existing Machines
- Simple Multi-Axis Systems (Up to 4 Axes)
- Conveyor and Sorting Systems
- Filling and Dosing Machines
- Labeling and Marking Machines
Installation Requirements:
- Mounting: DIN Rail 35 mm or 4-Point Panel Mount (M4 Screws)
- Supply: 24 V DC, Ripple < 5%, Fused at 5 A
- EtherCAT: CAT5e/CAT6 Shielded Cable, Maximum 100 m per Segment
- Ambient: 0°C to +50°C, Humidity < 85% RH (Non-Condensing)
- Clearance: 50 mm Above, 30 mm Below, 20 mm Sides
Usage Precautions:
- Do not exceed 16 DI + 16 DO + 4 AI + 2 AO simultaneously — will cause cycle time degradation
- Backup programs to SD card before any firmware update
- Safety functions (STO, SS1) must be validated per EN ISO 13849-1 before use
- Maximum program scan time: 500 µs (exceeding this triggers watchdog fault)
- Do not use RS-485 and EtherCAT simultaneously for motion control (latency conflict)
