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[Proprietary mode] How to decode the contact status of the TX CONTACT in the Modbus table

The decoding of the contact status (open or closed) of the TX CONTACT is done on the "Status" register which comes after the "Device type and firmware version" register :

The open/closed status of inputs Ch1, Ch2 and OC are indicated on bits 5, 6 and 7 respectively (0 = open / 1 = closed).

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