Description
Order No.: 6ES7241-1CH30-1XB0 6ES72411CH301XB0 SIMATIC S7-1200, Communication Board CB 1241, RS485, terminal block, supports Freeport6ES72411CH301XB0_datasheet_en
Overview
For fast, high-performance serial data exchange via point-to-point connection
Implemented protocols: ASCII, USS drive protocol, Modbus RTU
Additional protocols can be loaded later
Simple parameterization with STEP 7 Basic
Can be plugged directly into the CPU
Application
The CB 1241 communication board RS 485 is used for fast, high-performance serial data exchange via point-to-point connections.
Point-to-point coupling is possible, for example, to:
SIMATIC S7 automation systems and systems of many other manufacturers
Printers
Robot controls
Modems
Scanners
Bar code readers, etc.
The CB 1241 communication board RS 485 can be plugged directly into all SIMATIC S7-1200 CPUs.
This provides users with the following advantages:
Optimal adaptation:
With communication boards, users can optimally adapt their controllers even to more complex tasks.
Flexibility:
If the task is expanded subsequently, the controller can be upgraded. Updating of the user program is extremely simple.
Use where space is limited:
The communication boards are directly plugged into the CPU, enabling the controller to be expanded without taking up any additional space.
Function
On the Communication Board CB 1241 RS 485, the following standard protocols are available:
ASCII:
For interfacing to third-party systems with simple transmission protocols, e.g. protocols with start and end characters or with block check characters. The interface handshake signals can be queried and controlled via the user program.
Modbus:
For communication according to the Modbus protocol with RTU format:
Modbus Master:
Master-slave interfacing with SIMATIC S7 as master.
Modbus slave:
Master-slave interfacing with SIMATIC S7 as slave; message frame traffic from slave to slave not possible.
USS drive protocol:
Instructions for connection of USS protocol drives are specifically supported. In this case, drives exchange data over RS485. It is then possible to control these drives, and to read and write parameters.
Additional drivers can also be downloaded.
Parameterization
The parameterization of the Communication Board CB 1241 is particularly user-friendly and simple with STEP 7 Basic:
The user specifies the properties of the module by means of a parameterization environment integrated into STEP 7 Basic.
