How to Set Up MDB Level 3 Always Idle | VPOS Media
This guide covers configuring MDB vending machines for "Always Idle" (Selection First) operation. This mode ensures the user selects their item before payment authorization, streamlining transactions and preventing overcharges.
Quick Reference: MDB Level 3 Always Idle mode
Use this guide to configure your VPOS Media device to operate in MDB Level 3 Always Idle mode. In this setup, the device stays in an idle state and waits for the customer to select a product on the machine before processing payment.
Quick Reference
If you're already familiar with the setup process and just need the configuration values, here they are:
Card Reader Tab
| Setting | Value |
| Card Reader MDB Level | 3 |
| Decimal Place | 2 |
| Transaction Start Method | Product |
MDB Tab
| Setting | Value |
| Cashless MDB Address | Enable Cashless Device #1 ✅ |
| MDB flags | 02 Pre-selection Enabled |
| MDB Level 3 Optional Features | Enable Always Idle State |
Payment Tab
| Setting | Value |
| Default Credit | Set higher than the most expensive product in the machine |
| Default Credit | Enabled ✅ |
⚠️ Important: The Default Credit value must be higher than the price of the most expensive product on the machine. After entering the amount, make sure to select the checkbox to enable it.
For step-by-step instructions on where to apply each setting continue with the video and full guide below.
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