The 6AG1211-1HD30-2XB0 is a SIPLUS variant of the S7-1200 CPU 1211C, built for extended temperature and harsh environments. It supports both FBD and LAD programming, runs on 24 V DC (permissible range 20.4–28.8 V), and communicates via PROFINET (TCP/IP, autocrossing). No local expansion modules—this is a compact fixed-I/O CPU. Dimensions 90 x 100 x 75 mm; mounts on standard DIN rail.
SIPLUS vs Standard 6ES7211-1HE31-0XB0
The sibling 6ES7211-1HE31-0XB0 is the standard S7-1200 CPU 1211C. The SIPLUS version extends the ambient range to -40 to 70 °C with conformal coating and wider component tolerance. Mechanical footprint and communication interface are identical—swap a standard unit for this one in a panel without rewiring. The SIPLUS has the same 1 MB load memory, 240 h backup, and no local expansion. If your job lives in a nacelle, cold store, or desert cabinet, this is the one to specify.