Key Features
- RS-485 communication module: CB 1241 RS 485 for the S7-1200 platform.
- Freeport support: Supports Freeport for serial communication tasks.
- Modbus RTU master and device: Integrated protocol driver support for Modbus RTU master and Modbus RTU device.
- Terminal block connection: Supplied with a terminal block.
- Conformal coating: Built with conformal coating for SIPLUS extreme use.
Applications
- RS-485 serial communication: For connecting systems over an RS-485 link.
- Freeport serial communication: For serial communication tasks using Freeport.
- Modbus RTU network communication: For Modbus RTU master or device communication in a network segment.
Technical Summary
| Product type designation | CB 1241 RS 485 |
|---|---|
| Based on | 6ES7241-1CH30-1XB0 |
| RS-485 | RS-485 |
| Freeport | Yes |
| ASCII | Yes; Available as library function |
| Modbus RTU master | Yes |
| Modbus RTU device | Yes |
| Diagnostics function | Yes |
| Input current from backplane bus 5 V DC, typ. | 50 mA |
| Power loss, typ. | 1.5 W |
| IP degree of protection | IP20 |
Frequently Asked Questions
What is Siemens 6AG2241-1CH30-1XB0 used for?
It is a SIPLUS S7-1200 CB 1241 RS 485 communication module with RS-485 connectivity and Freeport support.
Which communication protocols does CB 1241 RS 485 support?
It supports Freeport, ASCII as a library function, Modbus RTU master, and Modbus RTU device.
What is the maximum cable length for this module?
The maximum cable length is 1 000 m.
What electrical data should be checked for selection?
The module has a typical input current of 50 mA from the backplane bus 5 V DC and a typical power loss of 1.5 W.
Does the module include diagnostics?
Yes, it has a diagnostics function.
