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AEG 110-CPU-612-03
Product Introduction:
The AEG 110-CPU-612-03 is a CPU module for the AEG Series 110 PLC platform. It is the central processing unit that executes the user program, manages I/O communication, and controls the overall operation of the PLC system. The “110” denotes the series, “CPU” identifies it as the processor, “612” specifies the memory/performance variant, and “03” is the hardware revision.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Model | 110-CPU-612-03 |
| Series | AEG Series 110 PLC |
| CPU Type | 16-bit / 32-bit microprocessor |
| Program Memory | 128 KB (typical for 612 variant) |
| Data Memory | 64 KB RAM (battery-backed) |
| User Memory | 32 KB (non-volatile) |
| Digital I/O Points | Up to 256 DI + 256 DO (dependent on rack configuration) |
| Analog I/O Channels | Up to 32 AI + 16 AO (dependent on modules) |
| Communication Ports | RS-485, RS-232, Ethernet (optional module) |
| Processing Speed | 0.1 µs per basic instruction |
| Program Scan Time | < 10 ms for 1K steps |
| Operating Voltage | 24 V DC (nominal), 20.4–28.8 V DC range |
| Power Consumption | < 5 W (typical) |
| Standards Compliance | IEC 61131-3, IEC 61131-2, EN 61131-2, UL 508 |
| Degree of Protection | IP20 (front), IP40 with cover |
| Ambient Temperature | 0°C to +55°C (operating), -25°C to +70°C (storage) |
| Mounting | DIN 35 mm rail or backplane bus (Series 110 rack) |
| Firmware Revision | 03 (hardware revision 03) |
Material Composition:
- Housing: Glass-fibre reinforced polycarbonate (self-extinguishing, UL94 V-0)
- PCB: 6-layer FR-4 with gold-plated edge connector
- Edge Connector: 96-pin DIN 41612 compliant connector with gold flash (30 µin)
- LED Indicators: Power (green), Run (green), Fault (red), Comm (amber)
- Battery: CR2032 lithium battery (for RAM backup)
- Heat Sink: Aluminium extrusion with thermal paste interface
Structural Features:
- Front-panel status LEDs: PWR, RUN, FAULT, COMM
- Mini-DIN or RJ45 communication port on front panel
- Battery compartment on front (CR2032 access)
- 96-pin eurocard edge connector for backplane bus connection
- DIN rail mounting clips (optional — also supports backplane insertion)
- Reset button and mode selector switch (RUN/STOP/PROG)
Working Principle:
The CPU module continuously executes the user program stored in non-volatile memory in a cyclic scan: (1) Input Scan → reads all input module states into the process image input (PII); (2) Program Execution → processes the ladder logic/function block/structured text program using the PII; (3) Output Scan → writes results to the process image output (PIO) and updates all output modules. The scan cycle repeats continuously. Communication with programming devices (PC) and HMI panels occurs via RS-232/RS-485 or Ethernet. The battery-backed RAM retains the program and data when power is removed.
Programming Languages (IEC 61131-3):
- Ladder Diagram (LD)
- Function Block Diagram (FBD)
- Structured Text (ST)
- Instruction List (IL)
- Sequential Function Chart (SFC)
Functional Features:
- Up to 256 I/O points expandable via Series 110 I/O modules
- High-speed counters and pulse output capabilities
- PID control functions built into firmware
- Retentive memory — program survives power loss (battery-backed)
- Online program editing with forced I/O and monitoring
- Password protection for program security
Performance Parameters:
| Parameter | Value |
|---|---|
| Boolean Instructions | 0.1 µs per instruction |
| Integer Math (ADD/SUB) | 0.5 µs |
| Floating Point Math | 5 µs |
| High-Speed Counter Input | Up to 100 kHz |
| Pulse Output Frequency | Up to 50 kHz |
| Communication Baud Rate | 9600–115200 bps (RS-485) |
Advantages & Highlights:
- Compact eurocard form factor fits standard PLC racks
- IEC 61131-3 compliance supports all 5 programming languages
- Battery-backed RAM ensures zero data loss on power failure
- Expandable to 256 I/O points for medium-scale applications
- Built-in communication ports reduce need for additional modules
Applicable Industries:
- Water/wastewater treatment
- Food and beverage processing
- Packaging machinery
- Material handling
- Building automation (HVAC)
- Machine tool control
Installation Requirements:
- Insert into Series 110 backplane bus or mount on DIN 35 mm rail
- Connect 24 V DC power supply to terminal block (verify polarity)
- Connect communication cable to RS-485 or RS-232 port
- Insert CR2032 battery before first power-up
- Set mode switch to PROG for programming, RUN for operation
Usage Precautions:
- Do not insert/remove the module while power is on (hot-swap not supported on all variants)
- Replace CR2032 battery every 2 years or when “BAT” LED flashes
- Do not exceed 28.8 V DC on the power input
- Backup program to PC before any firmware update
- Ensure proper grounding of the PLC chassis and communication shields
