Technical data
MD720-3 in OPC Mode
SINAUT MD720-3
52 C79000-G8900-C210
9.2 Prepare the SINAUT MD720-3 for the OPC mode
The GSM/GPRS-Modem SINAUT MD720-3 will be configured by the PLC S7-200
and the program modules. An additional configuration is not necessary.
9.3 SMS transmission in OPC mode
Information about the SMS transmission in OPC mode you can find in the Internet
in the SET21 examples, Beitrags-ID 22537809
9.4 Service calls in OPC mode
To download a new firmware setup a service connection to the GSM/GPRS
modem MD720-3.
You need a computer with a modem (Analogue, ISDN or GSM) and a
corresponding network access. You have installed a modem driver for the used
modem on your PC.
As SERVICE_CLIP (see chapter 8.2 Program module WDC_INIT) need to be
entered the telephone number, which you use to call the SINAUT MD720-3.
To set up a network connection
A network connection is used to communicate with the SINAUT MD720-3 in
Service mode.
1. Click Start, Control Panel.
2. In the Category View select Network and Internet Connections.
3. Select Set up a connection with the network at the office and follow the wizard
for new connections that will start.
4. Select Remote Data Transmission and click Next.
5. Select the Modem you have installed before and click Next.
6. Give a name to the new connection, e.g. Service-MD720. Then click Next.
7. Enter the telephone number the SINAUT MD720-3 uses for data calls and then
click Next.
8. Click Finish to terminate the wizard.










