Siemens 6ES7317-6TK13-0AB0 – CPU317T-2 DP 1024KB
Siemens 6ES7317-6TK13-0AB0 – CPU317T-2 DP 1024KB from the S7-300 range. Status: discontinued by the manufacturer, no longer available new since October 2026; successor 6ES7317-7TK10-0AB0. Van Haelen supplies it refurbished or new in sealed factory packaging, with a 24-month warranty.
Also written as: 6ES7 317-6TK13-0AB0, 6ES73176TK130AB0
The Siemens 6ES7317-6TK13-0AB0 is a S7-300 control component from the Simatic S7-300 range. Manufacturer type designation: CPU317T-2 DP 1024KB. Status: discontinued by the manufacturer, no longer available new since October 2026; successor according to the manufacturer: 6ES7317-7TK10-0AB0. Key data: weight 0.808 kg, HS code 85371091. When replacing, check the product version (issue) on the rating plate; for most installations the same or a higher issue is suitable. Ask us about exchange, repair and a spare-parts pool for your installation.
Available as
Product data
| Manufacturer | Siemens |
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| Part number | 6ES7317-6TK13-0AB0 |
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| Type designation | CPU317T-2 DP 1024KB |
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| Series | S7-300 |
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| Manufacturer status | discontinued by the manufacturer, no longer available new since October 2026 |
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| Successor | 6ES7317-7TK10-0AB0 |
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| ETIM | EC000236 |
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| HS code | 85371091 |
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| Weight | 0,808 kg |
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Documentation from the manufacturer
All products of the S7-300 series
Faults and fixes 6ES7317-6TK13-0AB0
SF on, STOP on: CPU in STOP because of an error
The SF LED is lit and the CPU is in STOP. Siemens distinguishes software errors (an OB that is not loaded: OB80, OB85, OB86, OB121, OB122) from hardware errors (module removed or inserted in RUN, a module's diagnostic interrupt, a faulty MMC). Read the diagnostic buffer (STEP 7, Online & diagnostics): it names the OB number or the module. Load the missing OB or fix the module, then restart the CPU. If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
SF LED with a software error: OB80, OB85, OB121, OB122
Per Siemens' table the CPU goes to STOP when an interrupt or error calls an OB that is not loaded: cycle time exceeded (OB80), access to a missing module while updating the process image (OB85), programming error (OB121), I/O access error (OB122). Load the OB named in the diagnostic buffer; for OB80 extend the cycle time or restructure the program; for OB85/OB122 check the addressing in HW Config or replace the failed module. If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
SF LED with a hardware error: module removed, diagnostic interrupt, MMC
Siemens lists as hardware causes: a module removed or inserted in RUN (CPU to STOP), a distributed module on PROFIBUS/PROFINET (OB86/OB82/OB83), a module's diagnostic interrupt (OB82), a loose connector (OB85/OB122) and a faulty SIMATIC MMC (CPU requests memory reset). Screw the modules tight and restart the CPU; with a faulty MMC: replace the MMC, reset memory, transfer the program again, set the CPU to RUN. If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
BF LED lit: bus fault on PROFIBUS DP
Per Siemens a lit BF LED means a bus fault (hardware), a DP interface error, different transmission rates with several masters or a short-circuit on the bus; as a passive slave the CPU is still searching the baud rate because no master is active. The CPU calls OB86 and goes to STOP if OB86 is not loaded. Check the bus cable for short-circuit and breaks, the terminating resistors, read the diagnostic data and edit the configuration. If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
BF LED flashing: station failed or wrong configuration
A flashing BF LED means, per Siemens, as DP master: a connected station failed, at least one configured slave cannot be reached, or the configuration is wrong. As active DP slave: watchdog elapsed, DP communication down, wrong PROFIBUS address or wrong configuration. Verify the bus cable is connected to the CPU and the bus is not interrupted; wait until the CPU completed its startup; if the LED keeps flashing, check the DP slaves and their diagnostic data. If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
STOP LED flashing: CPU requests memory reset (0.5 Hz) or executes it (2 Hz)
A slowly flashing STOP LED (0.5 Hz) means the CPU requests a memory reset; fast flashing (2 Hz) means it executes the memory reset. RUN and STOP both flashing at 0.5 Hz: the blocks are being transferred from load memory to work memory. Perform the memory reset with the mode selector (MRES) and transfer the program again; if the CPU keeps requesting a reset, check the MMC. If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
All LEDs flashing: internal system error
If SF, DC5V, FRCE, RUN and STOP all flash, the CPU has an internal system error according to Siemens. Siemens prescribes: switch to STOP, power off and on, read the diagnostic buffer, read out the service data (V2.8 and up) and contact the Siemens partner. If the error persists the CPU itself is defective. If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
SF flashing at 2 Hz, all other LEDs off: no valid firmware
If only the SF LED flashes (2 Hz) and every other LED is off, the CPU has no valid firmware. Update the firmware via a Micro Memory Card holding the firmware files (chapter firmware update in the manual). If the error remains after these checks, the 6ES7317-6TK13-0AB0 itself needs replacing: we supply it refurbished and tested from stock, with a 24-month warranty.
Problems with 6ES7317-6TK13-0AB0: the red SF LED is on, what now?
SF means system fault: a hardware, firmware or program fault. Read the diagnostic buffer first (STEP 7 or TIA Portal: Online & diagnostics). Common causes on the S7-300: a missing or defective module in the rack, a configuration that does not match the hardware, or a diagnostic event whose organisation block (OB82, OB86, OB121, OB122) is not loaded; then the CPU also goes to STOP.
6ES7317-6TK13-0AB0: BF LED red, bus fault on PROFIBUS or PROFINET
BF (BF1/BF2 on CPUs with two interfaces) indicates a bus fault: a station that does not answer, a wrong address or device name, a broken cable or missing terminating resistors. Check the stations named in the diagnostic buffer and the cabling from the CPU first; only then suspect the CPU itself.
6ES7317-6TK13-0AB0 stays in STOP or the program is gone after a power loss
On the S7-300 the program lives on the Micro Memory Card (MMC). If the CPU stays in STOP with SF after power-up, or the program is gone: check that the MMC is inserted, makes contact and is readable. A worn or defective MMC is the most common cause; a memory reset (MRES) followed by a fresh download fixes corrupted contents, not a defective card.
6ES7317-6TK13-0AB0: DC5V LED off, CPU dead
Without the DC5V LED the CPU has no internal supply. First measure the 24 V on L+ and M and check the power supply (PS307: green LED). If the 24 V is fine and DC5V stays off, the CPU hardware is defective and replacement is the only remedy.
What do I check when replacing a 6ES7317-6TK13-0AB0?
Carry over the MMC with the program or download it again, and check the firmware version and the product version (issue, on the rating plate): the project must expect the same or a lower firmware than the replacement has. Note the PROFIBUS addresses and the PROFINET device name; you set them again on the new CPU. Keep a project backup before you start.
Fault not fixed: replace, exchange or repair the 6ES7317-6TK13-0AB0?
Replacing from stock is the fastest route when a machine is down. Van Haelen supplies the 6ES7317-6TK13-0AB0 refurbished (tested, with a test report per serial number) or new in factory packaging, with a 24-month warranty. The current lead time is shown with the condition on this page. Prefer an exchange: you get a refurbished unit straight away and return the faulty one within 14 days. Repairing your own unit is also possible: diagnosis, then a fixed price.
What information should I send for a quick diagnosis?
A photo of the rating plate (order number, product version, firmware), the exact fault code or LED state, when the fault occurs (at power-up, on enable, under load) and what you have already tried. For PLCs an export of the diagnostic buffer, for drives the parameter set. With that we can usually say the same day whether replacing, exchanging or repairing is best.
Frequently asked questions
Is the 6ES7317-6TK13-0AB0 still available?
Not new from the manufacturer any more: the 6ES7317-6TK13-0AB0 was discontinued since October 2026. Van Haelen supplies it refurbished and tested.
What is the successor of the 6ES7317-6TK13-0AB0?
According to the manufacturer it is the 6ES7317-7TK10-0AB0. A successor does not always fit an existing installation without changes; replacing like for like is often the fastest route. If in doubt, ask us.
What does refurbished mean?
Cleaned, inspected, aged or critical components replaced and tested to our test protocol for this product family. You get a 24-month warranty, a test report and a serial number label.
What should I check when replacing a 6ES7317-6TK13-0AB0?
Check the product version (issue) on the rating plate; for most installations the same or a higher issue is suitable.
Can I exchange or repair my faulty unit?
Yes. With an exchange Van Haelen supplies a refurbished unit straight away and you return the faulty one. With a repair you first get a diagnosis and then a fixed price, with test report and warranty.