SIEMENS
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Siemens IK PI · 2015
Industrial Remote Communication
TeleControl Basic for the stations
MD720 MODEM
7
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Design
•
Rugged plastic enclosure for DIN rail mounting
•
9-pin Sub-D socket with RS232 interface (PPI adapter for
SIMATIC S7-200 necessary)
•
Diagnostics LEDs for modem status, field strength and
connection check
•
SET service key
•
4-pin screw terminal for connection to the 24 V DC supply
voltage
•
SMA connection for GSM/GPRS antennas
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Function
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Quad band GSM with the frequency bands 850/900/1 800/
1 900 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
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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
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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)
© Siemens AG 2014