MD-08
Wiegand to RS-232 Output Converter
Installation and User Manual
1
1. Introduction
The MD-08 is an easy-to-use Wiegand to RS-232 converter. It allows
you to connect a Wiegand reader directly to one of your PC’s COM
ports. The MD-08 allows you to set employee and system codes
without having to use a reader attached to a controller in the network.
Figure 1: MD-08
2. 1BTechnical Specifications
2.1
Electrical Characteristics
Power Supply Either 2 terminal blocks or a DC jack. A
reader can use a sink up to 100 mA
Electrical Sink Up to 100 mA
Operating Voltage 9 to 15 VDC
Maximum Voltage 18 VDC
Input Current @ 12 V 10 to 12 mA (without reader)
Serial Interface Standard DB9 female
2.2 5BEnvironmental Characteristics
Operating Environment Indoor use only
Operating Temperature Range 0°C to 63°C (32°F to 145°F)
Operating Humidity Range 0 to 95% (non-condensing)
2.3 6BPhysical Characteristics
Dimensions 66 x 80 mm (2.60 x 3.15 in.)
Weight 75 g (2.6 oz)
3. 2BConnecting to the MD-08
You must use the AxTraxNG software to enroll cards. Please
refer to the relevant appendix in the
AxTraxNG™ Software
Installation and User Manual
.
There are three ways to attach Wiegand readers to the MD-08:
Wiring a reader directly to the MD-08’s terminal block (Figure 2)
Attaching a Rosslare reader directly to the MD-08’s connector
input (Figure 3)
Installing Rosslare’s MD-12W Proximity Reader Module directly into
the MD-08 (Figure 4)
Figure 2: MD-08 Terminal Block Wiring
Figure 3: MD-08 Connector to Reader
(Readers are not provided with the MD-08 and must be purchased
separately.)
Figure 4: MD-12W to MD-08
(The MD-12W is not provided with the MD-08 and must be purchased
separately.)
4. 3BCommunication Settings
The communication settings are 9600 baud, 8 bits, 1 stop bit and no
parity.
The message is in the following format:
SS 02 FF 02 FF 00 0E 29 YY DD XX
Where:
SS is the start frame: FF, FF, FF, 55
YY is the number of Wiegand reception bits (in hexadecimal base)
XX is the message check sum (without the start frame)
DD is the incoming Wiegand bits data up to 96.
For less than 96 bits (for example 26-Bit only), the data contain
leading zeroes (70 leading zeroes for Wiegand 26-Bit).
