Siemens 6ES7241-1AA22-0XA0 Modem Expansion Module

The Siemens 6ES7241-1AA22-0XA0 modem expansion module adds remote communication capabilities to the SIMATIC S7-200 PLC system. This module integrates a built-in analog modem for telephone line connectivity. It enables remote monitoring and control of S7-200 systems via standard phone networks. The module supports the PPP protocol for establishing internet connections through dial-up services.

Technical Specifications

The Siemens 6ES7241-1AA22-0XA0 expansion module features an internal analog modem with a maximum data transfer rate of 33.6 kbps. It includes a standard RJ11 telephone jack for connecting to the public switched telephone network. The module operates on 5 V DC supplied directly from the S7-200 bus. It consumes approximately 150 mA from the backplane. This modem module supports data compression and error correction protocols for reliable data transmission.

Parameter	Specification
Model Number	Siemens 6ES7241-1AA22-0XA0
Product Type	Modem Expansion Module
Compatible Systems	SIMATIC S7-200 PLCs
Modem Type	Analog (V.34)
Data Transfer Rate	33.6 kbps maximum
Connector	RJ11 telephone jack
Protocols Supported	PPP, V.34, V.42 bis
Power Supply	5 V DC from S7-200 bus
Current Consumption	150 mA typical
Power Loss	0.75 W
Dimensions (W x H x D)	46 mm x 80 mm x 62 mm
Weight	Approx. 0.12 kg
Protection Class	IP20
Diagnostics	LED indicator for connection status

Integration and Application

The Siemens 6ES7241-1AA22-0XA0 expansion module plugs directly into the S7-200 expansion port for straightforward installation. It communicates with remote devices using the Point-to-Point Protocol (PPP). The module supports data exchange with remote SCADA and monitoring systems. You can deploy this modem module for unattended remote sites requiring periodic data transmission and supervisory access.