Siemens ET200MP.PROFINET IO device interface module IM 155-5 PN ST
$638.98 – $709.98
IM 155-5 PN ST — supports up to 12 I/O modules without additional power supply, up to 30 modules WITH additional PS (shared device). MRP supported, IRT ≥0.25ms, includes PROFIBUS connection plug (6ES7972-0BB70-0XA0). [VERIFIED via Siemens official datasheet — note: title’s ’12 modules’ is the no-additional-PS limit, not the absolute maximum]
Technical Specifications
| Module Type | Interface Module (Standard class) |
| Max I/O Modules (no extra PS) | 12 |
| Max I/O Modules (with extra PS, shared device) | 30 |
| Network Redundancy | MRP (Media Redundancy Protocol) supported |
| IRT | ≥0.25ms isochronicity |
| Included | PROFIBUS connection plug (6ES7972-0BB70-0XA0) |
Typical Applications
Head module for ET 200MP distributed I/O stations — the actual maximum I/O module count depends on whether an additional power supply module is used, with 30 modules achievable in a shared-device configuration versus 12 on the base power budget alone.





