Product Overview
Applications
Supports Freeport communication.
Supports ASCII communication as a library function.
Supports Modbus RTU master and Modbus RTU device communication.
Supports USS communication as a library function.
Technical Summary
| Product type | CB 1241 RS 485 |
|---|---|
| Communication interface | RS485, terminal block |
| Protocols | Freeport; ASCII; Modbus RTU master; Modbus RTU device; USS |
| Input current | from backplane bus 5 V DC, typ.: 50 mA |
| Power loss, typ. | 1.5 W |
| Protection | IP20 |
Key Features
Product type designation: CB 1241 RS 485 for the SIMATIC S7-1200 family.
Supports Freeport, ASCII, Modbus RTU master, Modbus RTU device and USS; ASCII and USS are available as library functions.
Point-to-point cable length: max. 1 000 m.
Telegram length: max. 1 kbyte; 7 or 8 bits per character; 1 (Standard), 2 stop bits.
Input current from backplane bus 5 V DC, typ.: 50 mA. Power loss, typ.: 1.5 W.
Terminal block connection with IP20 degree of protection; diagnostics function: Yes.
Frequently Asked Questions
What is the exact product type of 6ES7241-1CH30-1XB0?
It has the product type designation CB 1241 RS 485.
Which protocols does this communication board support?
It supports Freeport, ASCII, Modbus RTU master, Modbus RTU device and USS. ASCII and USS are available as library functions.
What cable length is supported?
The maximum point-to-point cable length is 1 000 m.
What project details should accompany a quotation request?
Provide the requested quantity, destination, schedule context and any additional BOM lines.
