Issue
Customers wanting to use a Barcode Reader for door access
Environment
Access Control site wanting to use Barcode Readers
Cause
Barcode Readers often are a higher
Resolution
I/NET
The SCU is the best you could have so that makes it easier with memory requirements and so forth. Since you have the SCU, set it up for 26-bit Wiegand (2 parity bits and 24 data bits). It would look like this:
e eeeeeeee eeeeooooooooooooo o
That is a 1-bit starting bit, even parity, 8-bit facility code, site number, card number, 16-bit segment, and the 1-bit ending parity (26 bits all together). That is how many data bits the reader normally takes. 26-bit Wiegand is typical and most common.
The true bits are the facility code, site and card number. The beginning and end is the parity. For more information, see TCON300, beginning on page 9-59. This is the key card translations section, and may be valuable in figuring out the solution to the bar code reader.
Lastly, one idea is to contact a company called RFIDeas.com. They make a bar code reader that may be a solution. If the bar code reader is outputting a card number larger than 16 digits, convert it to 26-bits of Wiegand data (it can handle up to 64-bitWiegand). If it goes over 64-bit, they have a special firmware which allows up to 254 bits of wiegand data. With the SCU, the 26-bit is the standard. Code 128 is used to barcode INET products.
The Cypressworld CVX-1300 is an alternate solution for connection between the I/NET SCU and the Barcode Reader.
Continuum
Code 39 is used to barcode the serial number on Continuum and Pelco boards. Most readers can auto switch between these and other code types.
