MT-101 telemetry module – powerful device combining industrial grade GPRS modem, PLC controller, data logger and transmission protocol converter

The MT-101 telemetry module provides features of freely programmable PLC controller equipped with integrated GSM/GPRS modem, data logger and isolated RS-232/422/485 port for communication with the external world. The MT-101 allows building of modern wireless systems for the supervising, monitoring, measuring, diagnostics and control based on packet GPRS transmission technology. The important feature of the MT-101 module is the capability of data transmission not only in the polling process, but also as an event-driven mechanism (for example when binary input/output changes its state or when the signal on analog input changes by certain degree). The module provides built-in data logger of 100 ms time resolution (RTU functionality). MT-101 is fully configurable and programmable by the user in intuitive, user-friendly MT Manager software environment, either locally via serial port or remotely via GPRS network.

The MT-101 module allows direct connection of external signals to the device inputs/outputs. The resources can be expanded with external modules (e.g. the EX expanders manufactured by INVENTIA, standard PLC devices or I/O modules) operating in Modbus RTU Slave mode.

The MT-101 ensures easy integration in GPRS network of any kind of intelligent devices (like PLCs, measuring instruments, operator panels) equipped with RS-232/422/485 serial communication port. In case the device supports standard Modbus RTU protocol, the advanced functions of local communications, data processing, data logging, and spontaneous event-driven GPRS transmission are available. The user of MT-101 module has no obligation to know neither the GPRS transmission details, nor the AT control commands, the session negotiation protocols, the rules of verification of session activity and its re-negotiation after a break, the network access security restrictions, the data integrity rules nor the delivery validation of transmitted frames. Moreover, the communication of external devices with MT-101 module does not require any changes of their configuration settings or their application software. The MT-101 can operate as a local Master device which periodically polls an external device to get the user defined resources (inputs, outputs, analog inputs, registers, and internal flags). These resources are mirrored in the MT-101 memory, allowing detection of alarms, state changes, analog value changes, and meeting logical conditions, all these with the use of direct or calculated values. Data are transmitted via GPRS according to the rules defined by the user:

• as a response to a query
• autonomously by the module at defined moments of time
• spontaneously by the module as a result of the defined event (an alarm, a state change, an important change of an analogue value, fulfilled logical expression, etc.)

An event-driven transmission makes possible the creation of wireless systems of virtually unlimited size and distance with precise time resolution and short response time (2-3 seconds), and with very efficient use of GPRS transmission.

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