Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Module type | CM 1241 RS 232 |
| Interface | 1 x RS 232C (V.24) |
| Connection | 9-pole D-sub (pin) |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 20.4 V to 28.8 V DC |
| Supported protocols | Freeport; ASCII; Modbus RTU master; Modbus RTU device |
| Current consumption, max. | 200 mA; From backplane bus 5 V DC |
| Power loss, typ. | 1.1 W |
| IP degree of protection | IP20 |
Applications
- Freeport communication: Supports Freeport communication with a maximum telegram length of 1 kbyte.
- Modbus RTU communication: Supports Modbus RTU master and Modbus RTU device operation.
Key Features
- Communication module: CM 1241 RS 232 for SIMATIC S7-1200 communication applications.
- RS 232C interface: Has 1 RS 232C (V.24) interface with a 9-pole D-sub (pin) connection.
- Protocol support: Supports Freeport, ASCII, Modbus RTU master, and Modbus RTU device; ASCII is available as a library function.
- Supply voltage: Rated supply voltage: 24 V DC; permissible range: 20.4 V to 28.8 V DC.
- Freeport data: Telegram length, max.: 1 kbyte; bits per character: 7 or 8; stop bits: 1 (Standard) or 2.
- Protection and diagnostics: Has a diagnostics function, a status-of-the-outputs LED indication, and IP20 degree of protection.
Frequently Asked Questions
1. What interface does the Siemens 6ES7241-1AH32-0XB0 have?
It has 1 RS 232C (V.24) interface with a 9-pole D-sub (pin) connection.
2. Which protocols does the CM 1241 RS 232 support?
It supports Freeport, ASCII, Modbus RTU master, and Modbus RTU device. ASCII is available as a library function.
3. What supply voltage does this communication module require?
The rated supply voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
4. What is the maximum point-to-point cable length?
The maximum point-to-point cable length is 10 m.
