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CHAPTER 2
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2.2.2. MDB Coin Mechanisms
The Aeterna Coin Mechanism with MDB protocol foresees the connections towards the vending
machine and the Maxi Programmer. Any other peripheral used (ex. Bill Validator or Key Reader) in
this case is connected directly to the vending machine, not to the Coin Mechanism.
fig. 34
2.2.3. Warning
Attention: this equipment uses some batteries inside. Even when the equipment is switched
off it is necessary to be careful of not causing short circuits, which can damage the batteries
and the equipment itself. If the equipment has been left at rest for a long time the batteries
can deteriorate.
