What this CPU is
The 6AG1516-3AN00-7AB0: DCP (Discovery and Configuration Protocol) is included — that's the service PROFINET controllers use to identify and assign IP addresses to devices on the wire. FBD is also on board if you program in function block diagrams.
How it compares to the standard version
Dimensions match standard version: 105 x 147 x 129 mm. Temperature range extends from -40 to 70°C.
Mounting and integration
Dimensions 105 x 147 x 129 mm. Supports -40 to 70°C and MRP ring topologies. Up to eight communication modules (CM/CP) can be plugged in for PROFIBUS, additional Ethernet, or serial extensions — the CPU front doesn't block the adjacent slots. Process image is 32 kbyte each for inputs and outputs, adequate for several hundred I/O points within one cycle.