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 FW update; I&M0...3; FSU with 500 ms