Specifications

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Only two of the three ports may be activated at a time. By default, the V-Smart

shall be configured for Port Mode 0 (Host RS-232 DB15 / Aux RS-232 RJ11) because

Host RS-232 protocol is necessary for communications between the smart card

interface and fingerprint verification modules. Thus, the RS-232 DB15 port may NOT

be used for PC communications. Typically, V-Smart readers do not require RS-485

communication since the fingerprint templates are stored on the smart card itself

rather than in the reader’s memory; thus, they do not require a network for

template distribution. Should you desire to implement a RS-485 network of V-Smart

readers, MV1200 Veri-Series Port Mode 2 must be chosen which activates both RS-

485 and RS-232 Host communication, leaving the bottom RJ11 RS-232 port

disabled.

7.1. RS-485 DB15 Port

The V-Smart reader shall support RS-485 serial communications protocol

accessible from the DB15 port. The V-Smart shall require configuration by

means of an active port (RS-232 RJ11 since RS-232 DB15 is dedicated to

connection to smart card interface module) to activate the RS-485 DB15 port.

To activate the RS-485 DB15 port, a Port Mode of 2 (Host RS-232 DB15 / Aux RS-

485 DB15) must be selected. Note that if Port Mode 2 is selected, the bottom

RJ11 RS-232 port will be de-activated.

For RS-485 protocol support, an external converter must be utilized. Bioscrypt

has tested and qualified the B&B Electronics 485TBLED RS-485/RS-232

converter for use with the V-Smart reader (must be purchased separately).

The B&B Electronics converter connects directly to both the Host PC and to

the V-Smart reader. This converter shall support “sense data,” also referred to

as “send data”. This is necessary since the V-Smart reader shall utilize a half-

duplex (2-wire) RS-485 signal with no RTS/CTS control on the RS-232 line.

The RS-485 communications protocol should be chosen if a network of more

than one V-Smart reader is being installed or if a single reader is being

installed more than 150 feet from the PC or other host. This network is optional

and shall not be required for template distribution since the fingerprint

templates are stored on the smart card and not the reader’s internal memory.

The maximum cable distance for a RS-485 network is 4,000 feet (1200 meters),

over which no more than 31 V-Smart readers can be added. To extend these

limitations, contact Bioscrypt Technical Support. No end-of-line termination is

required at a baud rate of 9600. For RS-485 communications, the V-Smart

readers must be connected as follows: