Key Features
- RS485 communication board: SIMATIC S7-1200 Communication Board CB 1241 for RS485 communication.
- Protocol support: Supports Freeport, ASCII, Modbus RTU master, Modbus RTU device, and USS.
- Terminal block connection: Supplied with terminal block.
- Diagnostics function: Diagnostics function: Yes.
- Point-to-point cable length: Cable length, max.: 1 000 m.
Applications
- RS485 network communication: Communication over an RS485 interface in a SIMATIC S7-1200 setup.
- Freeport data exchange: Freeport communication for custom serial data exchange.
- Modbus RTU communication: Modbus RTU master and Modbus RTU device communication on a network segment.
Technical Summary
| Product type designation | CB 1241 RS 485 |
|---|---|
| Interface | RS485 |
| Protocol support | Freeport |
| Modbus RTU master | Yes |
| Modbus RTU device | Yes |
| ASCII | Yes; Available as library function |
| USS | Yes; Available as library function |
| Input current from backplane bus 5 V DC, typ. | 50 mA |
| Power loss, typ. | 1.5 W |
| Diagnostics function | Yes |
| IP degree of protection | IP20 |
Frequently Asked Questions
What is the Siemens 6ES7241-1CH30-1XB0 used for?
It is a SIMATIC S7-1200 Communication Board CB 1241 for RS485 communication.
Which protocols does the 6ES7241-1CH30-1XB0 support?
It supports Freeport, ASCII, Modbus RTU master, Modbus RTU device, and USS.
What is the maximum cable length for the CB 1241 RS 485?
The cable length, max., is 1 000 m.
What power and current values are given for the communication board?
Input current from backplane bus 5 V DC, typ.: 50 mA. Power loss, typ.: 1.5 W.
Does the 6ES7241-1CH30-1XB0 include diagnostics and protection information?
Yes. Diagnostics function: Yes. IP degree of protection: IP20.
