Siemens 6ES7317-2AK14-0AB0 S7-300 CPU 317-2 DP Controller

Product Overview – CPU 317-2 DP

• 6ES7317-2AK14-0AB0 is a SIMATIC S7-300 central processing unit.
• Equipped with 1 MB work memory (non-expandable).
• Features two integrated RS485 interfaces: MPI/DP and PROFIBUS DP (master/slave).
• Requires a Micro Memory Card (MMC) for load memory (up to 8 MB).
• Delivered as a spare part with 12-month warranty and 24-28 hour dispatch.

Key Technical Data

• Brand: Siemens
• Model: 6ES7317-2AK14-0AB0
• Series: SIMATIC S7-300
• CPU Type: 317-2 DP
• Work Memory: 1024 kbyte (integrated)
• Load Memory: MMC required, max. 8 Mbyte
• Processing Times: 0.025 µs (bit), 0.03 µs (word), 0.04 µs (fixed), 0.16 µs (float)
• Digital I/O Address: 8192 bytes each (inputs/outputs)
• Analog I/O Address: 4096 bytes each
• Number of Blocks: max. 2048 (DB, FC, FB)
• Counters/Timers: 512 each (S7), IEC unlimited
• Retentive Data: max. 256 kbyte
• Interfaces: 2x RS485 (MPI/DP + PROFIBUS DP)
• DP Devices per Master: max. 124
• Connections: overall 32 (PG, OP, S7 comm)
• Diagnostic Buffer: 500 entries
• Supply Voltage: 24V DC (19.2..28.8V)
• Current Consumption: typ. 870 mA (rated), 120 mA (no-load)
• Power Loss: typ. 4.5 W
• Dimensions (WxHxD): 40 x 125 x 130 mm
• Weight: approx. 360 g

Installation & Commissioning

• Mount in S7-300 rack (max. 4 racks, 8 modules per rack).
• Use MMC for program/data storage – data retention up to 10 years.
• Supports configuration in RUN and firmware update.
• Diagnostic buffer retains last 100 entries after power failure.

Compatibility & Engineering

• Program with STEP 7 V5.5 + SP1 or higher (HSP 202/203).
• Supports LAD, FBD, STL, SCL, CFC, GRAPH, HiGraph.
• Integrates with MPI, PROFIBUS DP networks.
• Routing via X1 (MPI) or X2 (DP) – up to 24 connections.
• Not compatible with PROFINET or PROFIsafe.

Diagnostic & Maintenance Features

• Status/control variables (max. 30 variables, 14 for control).
• Forcing function for inputs/outputs (max. 10 variables).
• Breakpoints (4) and single-step debugging.
• Process diagnostic messages and Alarm_S blocks (max. 300).

Typical Applications

• Medium to large automation tasks in manufacturing.
• PROFIBUS DP master/slave networks with up to 124 devices.
• High-speed bit processing (0.025 µs) for fast logic control.
• Retrofit or upgrade of existing S7-300 systems.

Oiltech Controls Insight

• This CPU is a popular choice for S7-300 based control cabinets.
• Commonly paired with ET 200M distributed I/O via PROFIBUS.
• Ideal for legacy system upgrades or as a hot spare.
• Works best with MMC cards (e.g., 6ES7953-8L… series).
• Suitable for automotive, packaging, and material handling lines.

Frequently Asked Questions (FAQ)

• Q: What is the maximum program size?
  A: 1 MB work memory; load memory depends on MMC (max. 8 MB).
• Q: Can I use this CPU as a DP slave and master simultaneously?
  A: Yes, but not on both interfaces at the same time. One can be master, the other slave.
• Q: Is the MMC included?
  A: No, it must be ordered separately. We recommend 6ES7953-8L… series.
• Q: What is the difference between X1 and X2 interfaces?
  A: X1 is MPI/DP (12 Mbps), X2 is pure PROFIBUS DP (master/slave) with isochronous support.
• Q: How do I choose between this and a newer S7-1500?
  A: Choose this for existing S7-300 systems. For new projects, S7-1500 offers more performance.

Why Buy From Oiltech Controls?

• 15+ years supplying industrial automation spare parts.
• Global shipping via FedEx, UPS, DHL – 24-28 hour dispatch.
• All items are tested – industrial surplus or refurbished options.
• 12-month warranty on every CPU.
• Technical verification performed before shipment.
• Expert support for obsolete and legacy control systems.

Contact Information: For inquiries, email info@oiltechcontrols.com or call +86 158 8020 0923 (WhatsApp).

Packaging List: CPU module only. MMC, front connector, and mounting accessories are sold separately.

Shipping & Delivery: We ship worldwide via FedEx, UPS, or DHL. Orders are processed within 24-28 hours.

Certifications: CE, UL, tested for 500 V DC isolation (backplane bus).

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