Key Features
- Communication module for SIMATIC S7-1200: Communication module CM 1241 for the SIMATIC S7-1200 platform.
- RS 232C (V.24) interface: Provides 1 interface of type RS 232C (V.24).
- Freeport support: Supports Freeport for serial communication handling.
- Modbus RTU master and device: Integrated protocol driver support for Modbus RTU master and Modbus RTU device.
- 9-pole D-sub (pin) connection: Serial connection via 9-pole D-sub (pin).
- IP20 protection: Degree of protection: IP20.
Applications
- RS 232C serial communication: Serial data exchange through the RS 232C (V.24) interface.
- Modbus RTU communication: Modbus RTU data exchange as a master or device.
- Freeport communication handling: Freeport-based serial communication with the module.
Technical Summary
| Product type designation | CM 1241 RS 232 |
|---|---|
| Interfaces/bus type | RS 232C (V.24) |
| Number of interfaces | 1 |
| Supply voltage, rated value (DC) | 24 V |
| Supply voltage, permissible range, lower limit (DC) | 20.4 V |
| Supply voltage, permissible range, upper limit (DC) | 28.8 V |
| Current consumption, max. | 200 mA; From backplane bus 5 V DC |
| Power loss, typ. | 1.1 W |
| Integrated protocol driver – Freeport | Yes |
| Integrated protocol driver – ASCII | Yes; Available as library function |
| Integrated protocol driver – Modbus RTU master | Yes |
| Integrated protocol driver – Modbus RTU device | Yes |
| Freeport bits per character | 7 or 8 |
| Freeport number of stop bits | 1 (Standard), 2 |
| Degree of protection | IP20 |
Frequently Asked Questions
What is Siemens 6ES7241-1AH32-0XB0 used for?
It is a SIMATIC S7-1200 Communication module CM 1241 for RS232 communication.
Which interface does the 6ES7241-1AH32-0XB0 provide?
It provides 1 RS 232C (V.24) interface with a 9-pole D-sub (pin) connection.
Does the CM 1241 RS 232 support Modbus RTU?
Yes. It supports Modbus RTU master and Modbus RTU device.
What supply voltage does the module need?
Rated supply voltage is 24 V DC, with a permissible range of 20.4 V DC to 28.8 V DC.
What protection rating is listed for this module?
The degree of protection is IP20.
