Siemens 6ES7317-2AK14-0AB0 SIMATIC S7-300 Processor Module
Introduction:
CPU 317-2 DP central processing unit with 1MB work memory. Dual PROFIBUS DP interfaces. MMC required for program storage.
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Product Overview
CPU Design and Application
The Siemens 6ES7317-2AK14-0AB0 is a SIMATIC S7-300 CPU 317-2 DP Central Processing Unit. This spare part CPU features product type designation CPU 317-2 DP with HW functional status 01. The firmware version is V3.3 for reliable operation. Consequently, the 6ES7317-2AK14-0AB0 suits medium to large-scale automation applications requiring high processing speed and extensive memory.
Memory Configuration
The 6ES7317-2AK14-0AB0 provides 1 MB of integrated work memory. Therefore, it handles complex control logic and large data volumes efficiently. The load memory uses a Micro Memory Card (MMC) for program storage. Consequently, the MMC is required for operation and supports up to 8 Mbyte capacity. Data management on the MMC is guaranteed for at least 10 years after programming.
Processing Performance
The 6ES7317-2AK14-0AB0 delivers exceptional processing speed for demanding applications. Bit operations complete in 0.025 µs typical, while word operations finish in 0.03 µs. Fixed point arithmetic executes in 0.04 µs, and floating point arithmetic takes 0.16 µs. Consequently, the CPU handles complex mathematical and control algorithms without performance bottlenecks.
Technical Specifications
General Specifications
Manufacturer: Siemens
Part Number: 6ES7317-2AK14-0AB0
Product Type: SIMATIC S7-300, CPU 317-2 DP
Product Type Designation: CPU 317-2 DP
HW Functional Status: 01
Firmware Version: V3.3
Status: Spare part
Engineering Package: STEP 7 as of V5.5 + SP1 or STEP 7 V5.2 + SP1 or higher with HSP 202
Supply Voltage Specifications
| Parameter | Value |
|---|---|
| Rated Value (DC) | 24 V |
| Permissible Range (Lower Limit) | 19.2 V |
| Permissible Range (Upper Limit) | 28.8 V |
| External Protection Recommendation | 2 A min. |
| Mains Buffering Time | 5 ms |
| Repeat Rate (Min.) | 1 s |
Input Current Specifications
| Parameter | Value |
|---|---|
| Current Consumption (Rated Value) | 870 mA |
| Current Consumption (No-Load, typ.) | 120 mA |
| Inrush Current (typ.) | 4 A |
| I²t | 1 A²·s |
Power Loss
Power Loss (typ.): 4.5 W
Memory Specifications
Work Memory:
Integrated: 1,024 kbyte (1 MB)
Expandable: No
Load Memory:
Plug-in (MMC): Yes
MMC Maximum Capacity: 8 Mbyte
Data Management on MMC (min.): 10 years
Backup:
Present: Yes (guaranteed by MMC, maintenance-free)
Without Battery: Yes (program and data retained)
CPU Processing Times
| Operation Type | Typical Time |
|---|---|
| Bit Operations | 0.025 µs |
| Word Operations | 0.03 µs |
| Fixed Point Arithmetic | 0.04 µs |
| Floating Point Arithmetic | 0.16 µs |
CPU Blocks
| Parameter | Value |
|---|---|
| Total Number of Blocks | 2,048 (DBs, FCs, FBs) |
| DB Maximum | 2,048 (range 1 to 16000, max. 64 kbyte each) |
| FB Maximum | 2,048 (range 0 to 7999, max. 64 kbyte each) |
| FC Maximum | 2,048 (range 0 to 7999, max. 64 kbyte each) |
| OB Maximum | See instruction list (max. 64 kbyte each) |
OB Types and Quantities
| OB Type | Quantity |
|---|---|
| Free Cycle OBs | 1 (OB 1) |
| Time Alarm OBs | 1 (OB 10) |
| Delay Alarm OBs | 2 (OB 20, 21) |
| Cyclic Interrupt OBs | 4 (OB 32, 33, 34, 35) |
| Process Alarm OBs | 1 (OB 40) |
| DPV1 Alarm OBs | 3 (OB 55, 56, 57) |
| Isochronous Mode OBs | 1 (OB 61) |
| Startup OBs | 1 (OB 100) |
| Asynchronous Error OBs | 5 (OB 80, 82, 85, 86, 87) |
| Synchronous Error OBs | 2 (OB 121, 122) |
Nesting Depth
Per Priority Class: 16
Additional within an Error OB: 4
Counters and Timers
| Parameter | S7 Counter | S7 Timer |
|---|---|---|
| Number | 512 | 512 |
| Retentivity Adjustable | Yes | Yes |
| Preset Retentivity | Z 0 to Z 7 | No retentivity |
| Counting Range | 0 to 999 | 10 ms to 9,990 s |
| IEC Counter/Timer | Yes (SFB, unlimited) | Yes (SFB, unlimited) |
Data Areas and Retentivity
Retentive Data Area (max.): 256 kbyte
Flag Size (max.): 4,096 byte
Flag Retentivity Available: Yes (MB 0 to MB 4,095)
Preset Flag Retentivity: MB 0 to MB 15
Clock Memories: 8 (1 memory byte)
Address Area Specifications
| Parameter | Value |
|---|---|
| I/O Address Area (Inputs) | 8,192 byte |
| I/O Address Area (Outputs) | 8,192 byte |
| Distributed Inputs | 8,192 byte |
| Distributed Outputs | 8,192 byte |
| Process Image Inputs | 8,192 byte (adjustable) |
| Process Image Outputs | 8,192 byte (adjustable) |
| Digital Channels Inputs | 65,536 (central: 1,024) |
| Digital Channels Outputs | 65,536 (central: 1,024) |
| Analog Channels Inputs | 4,096 (central: 256) |
| Analog Channels Outputs | 4,096 (central: 256) |
Hardware Configuration
| Parameter | Value |
|---|---|
| Number of Expansion Units (max.) | 3 |
| Number of DP Masters (integrated) | 2 |
| Number of DP Masters (via CP) | 4 |
| FM (max.) | 8 |
| CP, PtP (max.) | 8 |
| CP, LAN (max.) | 10 |
| Racks (max.) | 4 |
| Modules per Rack (max.) | 8 |
Clock Specifications
| Parameter | Value |
|---|---|
| Hardware Clock | Yes (real-time, retentive, synchronizable) |
| Backup Time | 6 weeks (at 40°C) |
| Deviation per Day (max.) | 10 s (typ. 2 s) |
| Operating Hours Counters | 4 (range 0 to 3, 0 to 2³¹ hours) |
Interfaces
| Parameter | Value |
|---|---|
| RS 485 Interfaces | 2 |
| Interface 1 | Combined MPI / PROFIBUS DP |
| Interface 2 | PROFIBUS DP |
| PROFINET Interfaces | 0 |
| RS 422 Interfaces | 0 |
Supported Protocols
MPI
PROFIBUS DP master
PROFIBUS DP slave
S7 Communication (server)
S7 Communication (client via CP)
Routing
Global Data Communication
S7 Basic Communication
PG/OP Communication
Number of Connections
| Connection Type | Maximum |
|---|---|
| Total Connections | 32 |
| PG Communication | 31 |
| OP Communication | 31 |
| S7 Basic Communication | 30 |
| Routing (X1 MPI) | 10 |
| Routing (X1 DP Master) | 24 |
| Routing (X2 DP Master) | 24 |
Ambient Conditions
Operating Temperature: 0°C to 60°C
Dimensions and Weight
| Parameter | Value |
|---|---|
| Width | 40 mm |
| Height | 125 mm |
| Depth | 130 mm |
| Weight | approx. 360 g |
Installation Guide
Follow these steps to install the Siemens 6ES7317-2AK14-0AB0 correctly.
Insert MMC: First, insert a Micro Memory Card (MMC) into the CPU slot.
Power Down Rack: Next, disconnect power from the S7-300 rack completely.
Select Slot: Then, choose the appropriate slot for the CPU (typically slot 2).
Insert Module: After that, slide the 6ES7317-2AK14-0AB0 firmly into the selected slot.
Secure Module: Meanwhile, tighten the mounting screws to hold the CPU in place.
Connect Communication Cables: Finally, attach MPI and PROFIBUS DP cables to the RS 485 interfaces.
The 6ES7317-2AK14-0AB0 requires a Micro Memory Card for operation. Therefore, ensure the MMC is inserted before applying power. In addition, verify the firmware version compatibility with your STEP 7 software. Consequently, proper installation ensures reliable CPU operation.
Package List
The package includes the following physical items.
Siemens 6ES7317-2AK14-0AB0 CPU 317-2 DP module (1 piece)
Product label with part number and HW functional status
Anti-static protective bag for safe transport
Note: The Micro Memory Card (MMC) is not included. PROFIBUS DP and MPI cables are sold separately. No programming software is provided with this CPU.
Frequently Asked Questions (FAQ)
1. What memory is required for the 6ES7317-2AK14-0AB0?
The Siemens 6ES7317-2AK14-0AB0 requires a Micro Memory Card (MMC) for program and data storage. Therefore, the CPU cannot operate without an MMC inserted. The MMC supports up to 8 Mbyte capacity. Consequently, always install a compatible MMC before commissioning.
2. How much work memory does the 6ES7317-2AK14-0AB0 have?
The Siemens 6ES7317-2AK14-0AB0 provides 1,024 kbyte (1 MB) of integrated work memory. Therefore, it handles complex control programs and large data tables. The work memory is not expandable. Consequently, size your application within this memory limit.
3. What communication interfaces does the 6ES7317-2AK14-0AB0 have?
The Siemens 6ES7317-2AK14-0AB0 provides two RS 485 interfaces. Specifically, one is a combined MPI/PROFIBUS DP interface, and the other is a PROFIBUS DP interface. Therefore, the CPU connects to programming devices, HMI panels, and distributed I/O. Consequently, flexible network integration is achieved without additional communication modules.
4. What is the processing speed of the 6ES7317-2AK14-0AB0?
The Siemens 6ES7317-2AK14-0AB0 delivers exceptional speed with 0.025 µs for bit operations. Word operations complete in 0.03 µs, fixed point arithmetic in 0.04 µs, and floating point arithmetic in 0.16 µs. Therefore, the CPU handles demanding control algorithms efficiently. Consequently, high-speed applications are well supported.
5. What is the maximum number of blocks supported by the 6ES7317-2AK14-0AB0?
The Siemens 6ES7317-2AK14-0AB0 supports up to 2,048 total blocks (DBs, FCs, FBs). Therefore, extensive program structuring is possible. Each DB, FB, or FC has a maximum size of 64 kbyte. Consequently, the CPU accommodates large, modular programs.
6. What is the current consumption of the 6ES7317-2AK14-0AB0?
The Siemens 6ES7317-2AK14-0AB0 consumes 870 mA rated current at 24 V DC. The no-load consumption is 120 mA typical. Inrush current reaches 4 A typical. Consequently, ensure your power supply can deliver sufficient current for startup.
7. Is the 6ES7317-2AK14-0AB0 still available for purchase?
The Siemens 6ES7317-2AK14-0AB0 is listed as a spare part. Therefore, it may have limited availability from remaining stock. The CPU has HW functional status 01 and firmware V3.3. Consequently, verify availability with your supplier before ordering.
Related Accessories
Enhance your S7-300 system with these compatible parts.
Micro Memory Card: Siemens MMC 6ES7953 series (up to 8 Mbyte) for program storage
S7-300 Rack: Siemens 6ES7390 series for module mounting
Power Supply: Siemens 6ES7307 series for backplane power
Programming Cable: Siemens MPI cable for CPU connection
Programming Software: Siemens STEP 7 V5.5 + SP1 or higher for configuration
Always use genuine Siemens components with the 6ES7317-2AK14-0AB0. Therefore, third-party MMCs may cause compatibility or performance issues. In addition, verify the STEP 7 version for proper engineering support. Consequently, using authentic parts ensures optimal CPU performance and system reliability.