CPU 315-DP for expanded temperature range, 64 KB
The Siemens 6ES7315-2AF82-0AB0 is a SIMATIC S7-300 CPU 315-DP built for expanded temperature range operation, with 64 KB working memory and a second PROFIBUS DP interface that can act as master or slave. It integrates a 24 V DC power supply and is designed for the S7-300 rack, meaning it slots into the same backplane as any standard S7-300 CPU — no adapter or carrier required.
Two DP interfaces and expanded temperature range
The second DP interface (DP-Master/Slave) is the differentiator here — standard CPU 315-DP units carry one DP port. This variant gives you a second PROFIBUS channel for distributed I/O or a multi-master configuration without adding a CP. The expanded temperature range means the CPU is qualified for environments outside the standard 0–60 °C envelope — useful in cabinets near process heat, outdoor enclosures, or unventilated panels.