2. Processor & Performance

• CPU: 32-bit PowerPC RISC

• Clock Frequency: 266 MHz

• Boolean instruction speed: 0.05 μs/inst

• Redundancy mode: Hardware hot standby, fiber synchronization, bumpless switchover

3. Memory Configuration

• Program Memory: 4 MB

• Data Memory: 4 MB

• Internal Flash: 2 MB

• Retentive memory: Battery backed, data retention ≥ 10 years

• External storage: Support PCMCIA memory card

4. Onboard Communication

• Fiber Ethernet: 1 channel, 100 Mbps

  Protocols: Modbus TCP/IP, EGD, FTP, HTTP

• Modbus Plus (MB+): 1 × DB9 interface, 1 Mbps peer communication

• Serial Port: Modbus RTU

• Front USB: For programming, configuration and local diagnosis

5. I/O System Capacity

• Local racks: 2 racks maximum

• Remote I/O drops (S908): 31 nodes

• Distributed I/O (Modbus Plus): 63 nodes

• Max discrete I/O: 8192 inputs / 8192 outputs

• Max analog I/O: 512 inputs / 512 outputs

6. Electrical Parameters

• Backplane supply: 5 VDC

• Backplane current consumption: 1200 mA

• Power dissipation: Approx. 6 W

7. Environmental & Mechanical

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

• Storage temperature: -40 °C ~ +85 °C

• Relative humidity: 5% ~ 95%, non-condensing

• Protection grade: IP20

• Certifications: CE, UL, CSA, ATEX, RoHS

8. Software & Protocol

• Programming tool: Unity Pro, EcoStruxure Control Expert

• Standard: IEC 61131-3

• Supported languages: LD, ST, FBD, SFC, IL