The Siemens 6ES7317-2FK14-0AB0 is a SIMATIC S7-300 CPU 317F-2 PN/DP central processing unit, combining standard control and fail-safe (F) functionality in a single device. The CPU is certified up to SIL 3 (IEC 61508) and PL e (ISO 13849-1), making it suitable for safety-related applications in manufacturing and process industries.
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6ES7317-2FK14-0AB0Order(MOQ) :
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3kg| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Model | 6ES7317-2FK14-0AB0 |
| Product Family | SIMATIC S7-300F |
| Product Type | CPU 317F-2 PN/DP Central Processing Unit |
| Work Memory | 1.5 MB (integrated, not expandable) |
| Load Memory | SIMATIC Micro Memory Card (MMC), max. 8 MB (required) |
| Processing Times | Bit: 0.025 µs; Word: 0.03 µs; Fixed-point: 0.04 µs; Floating-point: 0.16 µs |
| Interface 1 | MPI/DP, 12 Mbit/s |
| Interface 2 | PROFINET (2 x RJ45, integrated switch) |
| Safety Certification | SIL 3 (IEC 61508), PL e (ISO 13849-1), Category 4 |
| Safety Protocol | PROFIsafe |
| PROFINET IO Controller | Yes; up to 128 IO devices |
| Max. I/O Address Area | 8 KB inputs / 8 KB outputs |
| S7 Counters | 512 |
| S7 Timers | 512 |
| Data Blocks (DB) | Max. 2,048; max. 64 KB each |
| Supply Voltage | 24 V DC (20.4 – 28.8 V) |
| Current Consumption | Typ. 1.1 A |
| Power Loss | Typ. 4.65 W |
| Dimensions (W x H x D) | 40 mm x 125 mm x 130 mm |
| Weight | Approx. 0.39 kg |
| Engineering Software | STEP 7 V5.5 + Distributed Safety V5.4 |
| Country of Origin | Germany (DE) |
| Lifecycle Status | Phased out (October 1, 2023) – Spare part only |
| Model | Description | Typical Application |
|---|---|---|
| 6ES7317-2FK14-0AB0 (this model) | CPU 317F-2 PN/DP, 1.5 MB, fail-safe, SIL3 | Mid-range safety applications in S7-300 |
| 6ES7317-2EK14-0AB0 | CPU 317-2 PN/DP, 1 MB, standard (non-F) | Standard automation without safety functions |
| 6ES7315-2FJ14-0AB0 | CPU 315F-2 PN/DP, 512 KB, fail-safe | Entry-level safety applications |
| 6ES7318-3FL01-0AB0 | CPU 319F-3 PN/DP, 2 MB, fail-safe | Highest-end safety applications in S7-300 |
| 6AG1317-2FK14-2AB0 | SIPLUS version with conformal coating, -25…+60 °C | Harsh environments requiring wide temperature range |
| 6ES7953-8LJxx-0AA0 | SIMATIC Micro Memory Card (MMC) | Required for CPU operation |
Q1: What is the primary function of the 6ES7317-2FK14-0AB0?
It is a fail-safe CPU in the SIMATIC S7-300F family, designed for both standard control and safety-related control (emergency stop, safety door monitoring, etc.) in a single device. It is certified up to SIL 3 / PL e, making it suitable for demanding safety applications in manufacturing and process industries.
Q2: What is the difference between CPU 317F-2 and CPU 317-2?
The 317F-2 (this model) is the fail-safe version, while the 317-2 (6ES7317-2EK14-0AB0) is the standard (non-F) version . Both share the same 1.5 MB work memory and PN/DP interface architecture, but the 317F-2 adds safety-related program execution and PROFIsafe communication capability. You can download a standard (non-safety) project to the 317F-2, but the safety functions will not be used.
Q3: Does this CPU require an MMC card to operate?
Yes. The CPU 317F-2 PN/DP requires a SIMATIC Micro Memory Card (MMC) for operation. The MMC serves as the load memory and is essential for program storage and data retention. Maximum supported capacity is 8 MB.
Q4: What software is required to program this fail-safe CPU?
The CPU requires STEP 7 V5.5 combined with the Distributed Safety V5.4 option package. The safety program is compiled separately and generates the F-shared DB required for PROFIsafe communication. It is not configurable in TIA Portal for the F-program (though the standard program can be ported). The CPU is also supported as a fail-safe I-Device from V3.2 onwards .
Q5: What are the key communication and motion control capabilities?
The CPU supports MPI/DP (12 Mbit/s), PROFINET IO Controller (up to 128 IO devices), PROFIsafe for safety communication, S7 communication, open IE communication (TCP/IP, ISO-on-TCP, UDP), and web server functions . It also supports isochronous mode (OB 61) for precise motion control applications.
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