SIMATIC ET 200MP. PROFINET IO device Interface module IM 155-5 PN ST for ET 200MP electronic modules; up to 12 IO modules without PS; up to 30 IO modules with additional PS; integrated 2-port switch; RJ45 shared device; MRP; IRT >=0.25 ms; isochronous mode Firmware update; I&M0…3; FSU with 500 ms