The master must always poll (query) the IU.
When the IU receives data from the BA or CC, it sends a header followed by data bytes in the response to master’s status request. If there is no BA or CC activity, the status is one byte, the header only. The IU’s typical response to the Master’s request (polling) consists of a header and data bytes. The master sends a status request (or command) to the IU and IU answers by sending its current status. The master and slave communication is based on master requests and slave replies. The master may be any control system that supports RS-232 serial communication, for example a PC. The IU functions as a slave to a master control system. This Interface Unit (IU) is designed to convert the MDB Bill Acceptor (BA) and MDB Coin Changer (CC) protocol to RS-232 serial protocol. The programming interface is user-friendly. Up to eight (8) MDB compliant devices may be attached to a single MDB-RS232. Hardware interface comes with cables,user's guide and user's protocal. The MDB-RS232 allows Coin Acceptance, Change Dispensing, smart card reader, magnetic swipe, credit card reader,bill acceptor and bill validation all controlled by the PC.Conforms to all NAMA MDB specification and is compatible with any MDB compliant vending device. The vending machine standard NAMA Multi-Drop Bus (MDB) may now be interfaced to a PC using the MDB-RS232. (Not including the PC SDK software code, if need more PC SDK software code,please order other link with SDK parts)īefore order and after ordered ,any technical questions,please contact our online Two pcs 2020 New version MDB-RS232 adapter box (USB interface) Working with bill acceptor,coin validator, card reader,cashless defvice, for vending machine,kiosk machine,kiosk information machine
This is 2020 Version MDB-RS232 with USB interface
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