Quick answer: The Siemens ET 200SP CM 4×IO-Link (order code 6ES7137-6BD00-0BA0) is a Communication Module for the SIMATIC ET 200SP distributed I/O system. IO-Link master, 4 ports Class A/B, for IO-Link devices (sensors, actuators).
| Identification | |
| Module Name | CM 4×IO-Link |
| Order Code (MLFB) | 6ES7137-6BD00-0BA0 |
| Module Type | Communication Module |
| I/O Characteristics | |
| Channel Count | 4 channels |
| Signal Type | IO-Link |
| Voltage / Range | 24V DC |
| Description | IO-Link master, 4 ports Class A/B, for IO-Link devices (sensors, actuators). |
| General | |
| System Compatibility | SIMATIC ET 200SP (PROFINET / PROFIBUS station) |
| Compatible Controllers | S7-1500, S7-1200, S7-300/400 (via IM interface module) |
| Operating Temperature | -30°C to +60°C |
| Supply Voltage | 24V DC (via ET 200SP backplane / PM module) |
| Protection Rating | IP20 |