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Block diagram of a converter system TRM202

Communication with ECL300 and counters is Modbus RTU. Meters are connected to the controller via ECA73, making communication with them is carried out indirectly by the regulator and is also the Modbus RTU protocol. The converters TRM2x2 both types of communication: GPRS and Ethernet are implemented independently, so you can use the telemetric system completely freely offered methods of communication, opting for the use of one or both of communication technologies simultaneously. It is possible to use a single technology such as Ethernet as the primary channel of communication and GPRS used as an emergency communication channel.

Communication Architecture Internet / Ethernet

The figure below shows an example architecture of thermal communication with nodes using the infrastructure of Internet / Ethernet. It can be any type of network such as the estate made over the Internet in a wired or wireless WiFi, cable TV network, Neostrada TP SA, Netia, fiber network, etc. SMS messaging in the form of short text message is done indirectly by sending a message to a user's email account mobile operator. In this way the message is sent to a given mobile phone number via SMS. The user may apply the TRM converters for integration with any ECL visualization software with an open protocol, Modbus TCP or monitor the work of district heating from any computer with a web browser such as Internet Explorer, Firefox, Opera, etc.

Architecture of GSM / GPRS

With the built-in converters TRM2x2 radiomodemowi GSM / GPRS, monitoring may also be subject to substations, where the availability of popular Internet / Ethernet networks is limited. To join the wireless technology in the monitoring system communicating nodes, it suffices SIM card from any GSM service active GPRS and GSM network coverage in the GSM antenna site. Moreover, in one system can combine both communication technologies such as Internet / Ethernet and GSM / GPRS. An example of the architecture of such a solution is presented in the next section. Communication architecture of a combined Ethernet / Internet / GSM / GPRS. As shown in the diagram above, in one system may have both nodes involved in the standard Internet / Ethernet or GSM / GPRS. As shown in the diagram above, in one system may have both nodes involved in the standard Internet / Ethernet or GSM / GPRS. In addition, if an increase of reliability of communication can be applied both communication technologies in a single node at a time. In this case, communication Internet / Ethernet can be a primary channel of communication, and communication GSM / GPRS standby, activated in the absence of communication in the primary communication channel. An example of such a monitoring node is monitoraggio shown in the figure above the third node External Extensions - a series of modules TRM-7000 Input-output interfaces TRM converters can also be extended by connecting via RS-485 External Expansion Modules TRM-7000 series. There are Pt100 temperature input modules, Pt1000, 0th analog inputs 10 V, 0-20mA, 4-20mA inputs, analog outputs 0th 10V, 0-20mA, 4-20mA, digital inputs and digital outputs. How to connect external expansion modules are shown in the following diagrams.