SIMATIC S7 300 CPU 317 2 DP, 6ES7 317 2AK14 0AB0

? Overview

• Model: SIMATIC S7‑300 CPU 317‑2 DP (6ES7 317‑2AK14‑0AB0)
• Memory: 1 MB work memory; no internal expansion. Load/program stored on an MMC (Micro Memory Card), up to 8 MB
• Lifecycle status: Announced phase-out effective October 1, 2023

? Power & Interfaces

• Power input: 24 V DC (permissible 19.2–28.8 V); typical current ~870 mA, no-load ~120 mA
• Power loss: ~4.5 W
• Buffering: 5 ms hold-up time on power loss
• Interfaces:
• MPI/PROFIBUS‑DP (12 Mbit/s)
• Second RS-485 PROFIBUS‑DP port (master/slave)

⚙️ Processing & Capabilities

• Processor speed:
• Bit ops: 0.025 µs
• Word ops: 0.03 µs
• Integer: 0.04 µs
• Floating‑point: 0.16 µs
• Programmability: STEP 7 v5.2+SP1 or v5.5+SP1 required
• Blocks: Supports up to 2 048 programming blocks (DBs, FCs, FBs)

? PROFIBUS‑DP Master Features

• Data rate: Up to 12 Mbit/s
• Max devices: 124 DP slaves
• Supports:
• DPV1
• Activation/deactivation of devices (up to 8 at once)
• Slave-to-slave data exchange

? Memory & Backup

• Load memory: MMC-supported, up to 8 MB
• Backup: Program/data retained without battery using MMC

? Physical & Environmental

• Dimensions: Approx. 125 × 40 × 130 mm (H×W×D)
• Weight: ~0.4 kg

✅ Key Features

• Central PLC CPU for medium automation tasks
• Dual PROFIBUS‑DP ports allow flexible network setups (e.g., daisy chain or separate domains)
• Fast execution, suitable for time-critical and process automation
• Modular architecture enables up to 4 expansion modules and 3 additional racks
• Memory via MMC for easy backup, updates, and transport
• Programmable with STEP 7, fit for integrating in STEP‑based systems