Brand :
SiemensThe 6ES7137-6AA01-0BA0 is a serial point-to-point (PtP) communication module from the Siemens SIMATIC ET 200SP series, also known as CM PtP.
It supports RS232, RS422, and RS485 serial interfaces, providing high flexibility. This module supports multiple protocols, including Freeport, 3964(R), Modbus RTU (master/slave), and USS, facilitating easy connection to various third-party serial devices. As a newer model with hardware version V2.0, it requires an A0 type BaseUnit and is fully supported in TIA Portal V17 and later versions.

| Brand |
SIEMENS |
| Model / Part Number | 6ES7137-6AA01-0BA0 |
| Series | SIMATIC ET 200SP |
| Interface Type | RS232, RS422, RS485 |
| Supported Protocols | Freeport, 3964(R), Modbus RTU (Master/Slave), USS |
| Transmission Rate | RS232/RS422: Max 115.2 kbit/s; RS485: Max 250 kbit/s |
| Supply Voltage | Rated 24V DC (19.2V to 28.8V DC) |
| Typical Power Consumption | 0.7 W |
| Base Unit | Suitable for A0 type BaseUnit |
| TIA Portal Support | Fully integrated from STEP 7 V17 onwards; earlier versions require previous generation models or GSD file configuration. |
Q: What types of devices can this module connect to?
A: This module is mainly used to connect third-party devices with RS232/RS422/RS485 serial interfaces, such as frequency converters, instruments, scanners, and sensors. Communication between the controller and these devices can be achieved by configuring different protocols (such as Modbus RTU or USS).
Q: Can a module use RS232, RS422, and RS485 simultaneously?
A: No. Although the module supports three interfaces, only one operating mode can be selected for communication at a time.
Q: My software is TIA Portal V16, can I use this module?
A: The model number "6ES7137-6AA01-0BA0" cannot be directly found in TIA Portal V16. The solution is to configure it using the model number "6ES7137-6AA00-0BA0" from its predecessor, or by installing the GSD file. This module only gained full support starting with TIA Portal V17.
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