Communication options with TeleControl Basic
Process data communication
The TeleControl Server Basic software enables the connection of up to 5000 telecontrol stations to the control center via the OPC interface using GPRS.
TeleControl Server Basic is an OPC server software with special communications functions, which permit it to support connections to remote telecontrol substations. These controls are equipped with the CP 1242-7 or the MD720-3 modem. The GPRS service (GeneralPacketRadioService) of a GSM network (GlobalSystem forMobile Communication) is used for the connections.
Via these GPRS connections, the remote telecontrol substations can communicate with the TeleControl Server Basic software or with other S7 controllers connected with TeleControl Server Basic.
The PC on which TeleControl Server Basic is installed must be permanently accessible from the GPRS network. It must therefore be directly connected to the GPRS provider using a dedicated line, or permanently to the Internet, e.g. by means of DSL.
The TeleControl Basic software package includes a block library for the SIMATIC S7-200 controller. With the help of these blocks, users can implement the following types of data exchange with S7-200 substations.
For substations of the type S7-1200, the blocks for the CP 1242-7 are included in STEP 7 Basic V11.0
Alarm output per text message
The CP 1242-7 can receive and send text messages. A mobile phone or S7-1200 can be the communication partner.
Wake-up function
"Wake-up" of stations that change from standby mode to online mode for diagnostics purposes. The CP is wakened up by its communication partner (e.g. TeleControl Server Basic) by means of a wake-up call or a wake-up text message to establish the connection between them.
For security reasons, the communication partner must identify itself appropriately for the wake-up function, e.g. using the CLIP function.
Access to the substations using Teleservice
Telecontrol Server Basic includes the Teleservice function direct in STEP 7 Basic V11.0 for the CP 1242-7. This provides internationally active plant and machine manufacturers with global access to the S7-1200 stations.
Up to three telephone numbers can be saved on the SINAUT MD720-3 modem, from which a teleservice connection is permissible. If a call is made from one of the approved numbers, the MD720-3 interrupts the GPRS connection and switches through the teleservice connection to the PLC. The GPRS connection is reestablished at the end of the teleservice session.