Quick answer: The Siemens ET 200SP CM PTP (order code 6ES7137-6AA00-0BA0) is a Communication Module for the SIMATIC ET 200SP distributed I/O system. Serial CM: Modbus RTU, USS, 3964R, RK512 or free ASCII protocol.
| Identification | |
| Module Name | CM PTP |
| Order Code (MLFB) | 6ES7137-6AA00-0BA0 |
| Module Type | Communication Module |
| I/O Characteristics | |
| Channel Count | 1 channels |
| Signal Type | RS232/485 |
| Voltage / Range | RS232/485 |
| Description | Serial CM: Modbus RTU, USS, 3964R, RK512 or free ASCII protocol. |
| 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 |