Key Features
- RS-485 communication board: CB 1241 RS 485 for the SIPLUS S7-1200 range.
- Integrated protocol driver support: Freeport, ASCII, Modbus RTU master, Modbus RTU device, and USS.
- Terminal block connection: Supplied with a terminal block connection for installation.
- Conformal coating: Conformal coating is provided for the board.
- Diagnostics function: Diagnostics function: Yes.
Applications
- RS-485 network connection: Provides RS-485 communication in a SIPLUS S7-1200 setup.
- Freeport serial communication: Supports Freeport communication for point-to-point serial data exchange.
- Modbus RTU communication: Supports Modbus RTU master and Modbus RTU device operation.
Technical Summary
| Product type designation | CB 1241 RS 485 |
|---|---|
| Based on | 6ES7241-1CH30-1XB0 |
| Input current, from backplane bus 5 V DC, typ. | 50 mA |
| Power loss, typ. | 1.5 W |
| Freeport – Bits per character | 7 or 8 |
| Freeport – Number of stop bits | 1 (Standard), 2 |
| Freeport – Parity | No parity (standard); even, uneven, mark (parity bit always 1); space (parity bit always 0) |
| Modbus RTU master – Address area | 1 through 49 999 (Standard Modbus addressing) |
| Modbus RTU master – max. number of devices | 247; slave numbers 1 through 247, per MODBUS network segment maximum 32 devices, additional repeaters needed to expand the network to maximum configuration |
| Diagnostics function | Yes |
Frequently Asked Questions
What is Siemens 6AG1241-1CH30-5XB1?
It is a SIPLUS S7-1200 CB 1241 RS-485 communication board.
Which communication functions does 6AG1241-1CH30-5XB1 support?
It supports Freeport, ASCII, Modbus RTU master, Modbus RTU device, and USS.
What are the key electrical specifications of 6AG1241-1CH30-5XB1?
Input current from backplane bus 5 V DC is typ. 50 mA, and power loss is typ. 1.5 W.
What is the maximum cable length for the point-to-point connection?
The cable length, max. is 1 000 m.
What should be checked before selecting this board?
Check the RS-485 requirement, the needed protocol driver, and the installation details such as the terminal block connection and the 1 000 m cable length, max.
