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.
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.
The module measures 160 mm wide by 125 mm high by 130 mm deep — standard SIMATIC S7-300 footprint. 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.