The 6ES7215-1HG31-0XB0: This S7-1200 CPU sits in the middle of the 1215C line — 4 MB of code memory, a 1 kbyte process-image area for inputs and outputs, and a temperature range that covers unheated enclosures (-40 to 70 °C). It ships with LAD, FBD, and SCL programming, plus PROFIBUS and MODBUS TCP on the integral ports. No PROFIsafe, so keep safety functions on a separate F-CPU.
Mounts on DIN, I/O count, and backup
Mounts on standard DIN rail, 130×100×75 mm. The 24 V DC supply is isolated; onboard I/O gives you 14 digital inputs and 10 digital outputs, plus 2 analog inputs configurable for 0-10 V or 0-20 mA. The AS-Interface master is built in, so no extra module for field-device bus. Backup time of 480 h typical holds RAM data across short power outages without a battery.
Certified cULus, UL, CSA, FM, and CE — the full pack for panel approvals in North America and Europe.