CPU 317T-2 DP for high-speed technology functions
The Siemens 6ES7317-6TK13-0AB0 is a CPU 317T-2 DP of the SFB type, built for technology functions like high-speed cam switch signals. It carries 8 FM slots, so you can stack function modules for motion or positioning without eating up the main rack. CFC, FBD, LAD, STL, SCL, and GRAPH are all supported — pick your programming language. Operating range is 0 to 60 °C, which is standard for a ventilated panel; keep it out of the direct sun or hot motor alley.
What the ratings mean for fit
The I2t rating of 1 A²·s tells you the short-circuit withstand of the internal power supply — a fault downstream that exceeds that energy level will cook the module, so size your branch protection accordingly. It has 244 bytes each of process-input and process-output image, which is generous for a mid-range CPU; you can map a couple of analog cards and a bunch of digital without running out of I/O space. RS-485 is onboard for point-to-point drives or barcode readers, and you can add up to 10 CPs for LAN, 8 for PtP, and 2 for DP via CP modules. No MPI, no PROFIsafe, no routing — this is a dedicated technology CPU, not a safety controller.
Sourcing and lifecycle reality
This CPU is sourced to order through independent distribution. Availability and current pricing are confirmed at quote time against an RFQ.
Panel integration and mounting
The module measures 160 mm wide by 125 mm high by 130 mm deep — standard SIMATIC S7-300 footprint. It snaps onto a DIN rail in the enclosure. The 8 FM slots accept technology modules that share the backplane bus, so plan your slot layout before wiring. Forcing is supported, which is handy during commissioning but lock it out in production.