• Quad band GSM with the frequency bands 850/900/1800/1900 MHz
• GPRS Multislot Class 10 (gross: max. 42 Kbit/s upload, max. 54 Kbit/s download).
• Automatic establishment and holding of IP-based online connection over GPRS to the Internet
• Data exchange with PC-based TeleControl Server Basic (router and OPC (UA) server) application; data exchange with further MD720 modems possible over routing of TeleControl Server Basic
• Hot switchover between GPRS and CSD (modem operation)
• CSD and GPRS connection controllable using AT commands
• Sending of SMS and fax (via SMS) using GSM services
• Remote programming of S7-200 with MicroWin in GSM modem mode (CSD mode)
• Secure access to SIMATIC S7-200 data, also over mobile radio provider networks which do not provide public and fixed IP addresses for the modem

Configuration

• Parameterization using PLC blocks with the Micro/Win programming tool for SIMATIC S7-200
• PLC blocks are part of TeleControl Server Basic
• AT command interface

Security

• Approval of up to 3 call numbers for incoming GSM connections (CLIP function) for teleservice
• User name and password for GSM connection
• Unlimited client and server operation even in protected GPRS networks with private IP addresses of the mobile radio providers
• Secure data transfer in GPRS mode between modem, the Internet, and TeleControl Server Basic using encryption algorithms

Diagnostics / maintenance

• Status of establishment of connection, and of an existing connection on front LED display
• Reading of configuration data over the RS232 interface
• Connection status to modem and to PLC can be monitored in Telecontrol Basic
• Direct, additional access over GSM (modem operation) for teleservice (remote programming, remote diagnostics)