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PLC remote maintenance module with modem
MDM 300 Helmholz

The MDM 300 of Systeme Helmholz GmbH is a universal modem that can be installed in a single-wide S7-300* housing for the sectional rail. A 56 k modem is integrated into the housing of the MDM 300 that is prepared for use worldwide. Alternatively versions with ISDN or GSM functionality are also available.
Besides teleservice of a VISU/SCADA system, the main application is global data exchange.
By using the enclosed SHTools software are parameterization and diagnostic functions possible. For a firmware update is a free download of the latest SHTools version on our website available.
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