Technical Summary
| Product type designation | CB 1241 RS 485 |
|---|---|
| Interface | RS485 |
| Connection type | terminal block |
| Freeport | Yes |
| ASCII | Yes; Available as library function |
| Modbus RTU master | Yes |
| Modbus RTU device | Yes |
| Input current from backplane bus 5 V DC, typ. | 50 mA |
| Power loss, typ. | 1.5 W |
| Bits per character | 7 or 8 |
| Number of stop bits | 1 (Standard), 2 |
| Diagnostics function | Yes |
| IP degree of protection | IP20 |
Key Features
Communication Board CB 1241 for the SIMATIC S7-1200.
RS485 communication board with terminal block.
Supports Freeport.
Modbus RTU master and Modbus RTU device are supported.
Diagnostics function: Yes.
IP degree of protection: IP20.
Applications
Provides RS485-based communication in a SIMATIC S7-1200 system.
Supports Modbus RTU master and Modbus RTU device communication.
Supports Freeport communication for serial data handling.
Frequently Asked Questions
What is the exact product type of 6ES7241-1CH30-1XB0?
Product type designation: CB 1241 RS 485.
Which communication interface does this SIMATIC S7-1200 board use?
It uses RS485.
Does 6ES7241-1CH30-1XB0 support Modbus RTU?
Yes. Modbus RTU master and Modbus RTU device are supported.
What is the maximum cable length for this communication board?
Cable length, max.: 1 000 m.
What are the power and protection details for this board?
Input current from backplane bus 5 V DC, typ.: 50 mA. Power loss, typ.: 1.5 W. IP degree of protection: IP20.
