MDB-RS232 Interface Adapter for MDB Coin Changer Bill Acceptor and MDB card reader
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Important questions during application:
1. Sometimes when send the command to the mdb-rs232,but I cann’t get any reply. How can I
know if the command has already been sent successfully to the payment device?
Answer: In MDB-RS232 box design,when PC send the command to it ,it will forward the
command to payment device. But sometimes the payment device is busy,for example a bill is
inserted and payment device cann’t reply the box in time. So PC cann’t get the reply.then just
need to resend the command later. Of course,this is not a problem,because ALL the command
from PC,that is not a realtime command.
2. How can I know if the payment device is enabled or disabled ?
Answer: If the payment device is in disabled status,Bill acceptors will report the status to PC
always once each POLL. It will report
30 09
to PC, but for most coin acceptor,if need the status,
user can read the status with
0F05
command.
3. If I can use a PLC or android board to connect it ?
Answer: That is no problem. Actually,user can use any main controller which has RS232 or USB
port to work as the VMC.Of course, if the main controller only has the USB port.then will use a
USB version. And install the driver to create the virtual com port in the main controller.
3. If can supply more documents to facilitate the development of applications?
Answer: The MDB box we provide is to forward the data uploaded to the PC by the MDB
payment device. The documents we provide can only make it as easy as possible for customers
to understand the process of sending and receiving data and the structure of the data. As for
the commands of the host, the design of the user's host software requires the user to design
the control process after having a detailed understanding of the payment device and the MDB
protocol. We are not able to provide assistance in customer specific projects and software
design.
4. About the Status reading command of coin acceptor (
0F05
command to read the status)
Not all coin validators can report the full working status,especially the old version,even in
Level03,also cann’t provide the proper status report data
Normally after powered on, it should report
01 00 06 00 07
(
01/00
means powering up)
Read the status again should report
06 00 06
(coin validator is disabled by default)
After use the command
0CFFFFFFFF
to enable,then read status should report with
03 00 03
Must be noted: Some coin validators always report with
030003
,no matter in what status and
some only port with
000000
. In these cases where the MDB protocol is not followed, please
consult the coin validator manufacturer. Not a problem that MDB-RS232 boxes can solve
