The Siemens SIMATIC S7-300 CPU 317-2 PN/DP, identified by the MLFB 6ES7317-2EK13-0AB0, is a mid-to-high-end programmable logic controller engineered for complex automation architectures requiring both deterministic fieldbus and modern Ethernet-based networking. This CPU integrates a PROFINET interface alongside a combined MPI/DP port, enabling simultaneous communication with distributed I/O systems like ET 200M and higher-level control networks. With 1 MB of onboard working memory, it provides ample capacity for extensive user programs and data blocks, making it suitable for multi-axis motion control, process automation, and data-intensive applications. The CPU supports a broad range of organization blocks (OBs) for handling cyclic tasks, alarms, and error events, while offering unlimited S7 counters and timers (subject to available RAM). It operates on a 24 V DC supply and requires an external SIMATIC Micro Memory Card (MMC) for load memory and firmware updates. The device is fully programmable via Siemens STEP 7 V5.5+ SP1 or TIA Portal, ensuring backward compatibility and future-proof integration.
| Specification |
Details |
| Product Type |
SIMATIC S7-300 CPU 317-2 PN/DP |
| MLFB / Order Number |
6ES7317-2EK13-0AB0 |
| Working Memory |
1 MB (integrated) |
| Load Memory |
External SIMATIC Micro Memory Card (MMC) – 8 MB max. |
| Retentive Memory |
Yes – configurable for data blocks and timers/counters |
| Interface 1 |
MPI/DP – 12 Mbit/s (RS-485) |
| Interface 2 |
PROFINET (Ethernet) – 100 Mbit/s, 2-port switch |
| PROFINET Features |
PROFINET IO controller, RT/IRT, MRP, MRPD |
| DP Master Capability |
Yes – up to 125 DP slaves per interface |
| Number of Channels (DI/DO) |
Up to 65536 (via distributed I/O) |
| Number of Channels (AI/AO) |
Up to 4096 (via distributed I/O) |
| Max. Data Blocks (DB) |
4095 (limited by memory) |
| Max. Function Blocks (FB) |
2048 |
| Max. Functions (FC) |
2048 |
| Organization Blocks (OB) |
All standard OBs (OB1, OB35, OB40-47, OB82-86, etc.) |
| S7 Counters |
Unlimited (RAM-based) |
| S7 Timers |
Unlimited (RAM-based) |
| Bit Operation Time |
0.01 µs (typical) |
| Word Operation Time |
0.02 µs (typical) |
| Floating-Point Math Time |
0.1 µs (typical) |
| Power Supply Voltage |
24 V DC (20.4 to 28.8 V) |
| Current Consumption (Typical) |
800 mA (from backplane bus) |
| Power Dissipation |
6.5 W (typical) |
| Operating Temperature |
0°C to 60°C (horizontal), 0°C to 40°C (vertical) |
| Storage Temperature |
-40°C to 85°C |
| Relative Humidity |
5% to 95% (non-condensing) |
| Protection Class |
IP20 |
| Programming Software |
STEP 7 V5.5+ SP1 or TIA Portal V13+ |
| Compatible Memory Cards |
SIMATIC MMC (6ES7953-8LL20-0AA0 family) |
| Dimensions (W x H x D) |
80 mm x 125 mm x 130 mm |
| Weight |
Approx. 290 g |
| Standards & Certifications |
CE, cULus, FM, ATEX (Zone 2), IEC 61131-2 |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22