The 6AG1516-3AP03-2AB0: This is the SIPLUS version of the standard S7-1500 CPU 1516-3 PN/DP (6ES7516-3AP03-0AB0) with conformal coating and extended temperature range -40 to +60°C. It packs 2 MB of program memory and 7.5 MB of data memory, and carries three interfaces: PROFINET IRT with integrated 2-port switch, PROFINET RT, and PROFIBUS. Bit performance is 6 ns.
What makes it different from the standard CPU
Compared to the base 6ES7516-3AP03-0AB0, this SIPLUS variant adds conformal coating and supports ambient temperatures from -40°C to +60°C instead of the standard 0°C to 60°C. That coating protects against humidity, condensation, and corrosive atmospheres—useful in food production, chemical plants, or outdoor cabinets.