Control device for a meter device, particularly a water meter device, and meter device, particularly a water meter device

A control device for a meter device or a water meter device, the control device comprising:

• a first data interface for a meter unit configured for measuring a flow of a fluid of the meter device;
• a second data interface for a reading device communicating with the meter unit through the control device;
• and
• a supply interface to which a combined clock and voltage supply signal for the control device can be applied;
• the control device being configured for assuming a read mode in which data provided at said first data interface can be transmitted by the control device to said second data interface upon receiving a clock and voltage supply signal having a read signal variation;
• and
• the control device being additionally configured for assuming a write mode in which data provided at said second data interface can be transmitted to said first data interface upon receiving a clock and voltage supply signal with a write signal variation different from the read signal variation.