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GSM modems are specially adapted to interface to popular mini-controllers from Siemens and Moeller

13 May 2009

The GSM modem Insys GSM LOGO! allows users to turn mini PLCs from Siemens's LOGO! series into a cost-efficient fault detection and remote control system for decentralised monitoring tasks. In order to ensure the optimal use of all functions, Insys Microelectronics has adapted its communication device to the latest LOGO! version 0BA6.

The new version features optimally adapted firmware and a high-performance controller. The firmware allows monitoring of function blocks and status values (PA buffer) without interfering with the PLC program. The device is directly connected to the PLC via its serial interface (RS232), which enables the system to send alarm messages to mobile phones, request actual values and control switching relays via SMS or dial tone (Run, STOP).

In a separate move, Insys GSM modems now allow users to quickly establish cost-efficient wireless remote maintenance and control functions when combined with the Moeller easy MFD, easy 800, easy 500 and easy 700 PLCs.

Special firmware that is adapted to the PLC enables the GSM modems to monitor the status of the Inputs/Outputs, the internal flags and the actual data values and to transmit commands to the PLC. Data values can be included in text messages which are sent out by SMS request or at given times. Freely definable messages can be sent if pre-configured limits are exceeded or if the device's interrupt inputs are triggered. A confirmation request for received mes-sages can be specified as well.

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