Custom Sensors, Inc.

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DA2000 Decoder
·Operates From Single 5 Volt Supply
·Accepts Moving Beam Laser or Wand Input
·RS-232, RS-485 and Keyboard Wedge
·Polling Protocol
·Compare Mode
·All Parameters are User Configurable
·Configuration Stored in EEPROM
·Good Read and Power Indicator
DA2000 Decoder
The DA2000 Series barcode Decoder will work with undecoded Laser, CCD or Wand type scanners. The unit is contained in a 4.25"D X 2.6"W X 1.125"H enclosure and requires only a single 5 volt power supply. The decoder has three communications options. RS-232 is used for point to point communications. RS-485 is used in multidrop configurations. Up to 31 decoders can be networked from one computer port. Keyboard Wedge is used for entering barcode data directly into an application running on an IBM PC/AT compatible computer. The unit decodes two commonly used industrial barcodes; interleaved 2 of 5 and Code 39. Both normal and extended Code 39 are supported. A compare function lets each barcode read be compared to a programmed value. All operating parameters of the decoder can be configured using a serial data terminal or PC configured as a terminal. Once configured, this information is stored in nonvolatile EEPROM memory.

The DA2000 Series Barcode Decoder is designed to be used in a variety of applications. The unit can be used with undecoded "Laser Gun" type scanners and also handheld CCD scanners that are configured to look like laser guns. It can also be used with fixed beam scanners and wand type scanners. RS-232 communications is used for serial, point to point communications. Baud rates of up to 19,200 are available. Up to 31 decoders can be networked using RS-485 communications. See Application note AN011 for more details. The unit uses Custom Sensors' polling protocol. Only a single RS-485 port is required. In Keyboard Wedge mode, the decoder emulates a PC/AT keyboard. All keyboard keys, including ALT, CTRL and function keys can be encoded into an Extended Code 39 Barcode. The compare function can be used to compare the barcode read to a value contained in a nonvolatile buffer. If the two compare, a normal serial transmission is made. If they do not compare, a no-compare output is energized and the characters "NC" are substituted for the barcode characters in the data transmission.


Power:           +5VDC ±5% @ 60ma. Maximum
Digital Input:   TTL Level Signal, Bar=1 in Normal Mode,
                 Bar = 0 in Laser Mode.
RS-232 " RS-485: Serial ASCII
Baud Rates:      2400, 4800, 9600, 19200
Parity:          Mark, Space, Even or Odd
Stop Bits:       1 or 2
Keyboard Wedge:  IBM PC/AT keyboard Interface
Messages:        10 Character preamble and ID character.

Code Types:      Interleaved 2 of 5, Code 39
                 Extended Code 39
Code Lengths:    Up to 20 Characters.
Check Character: Supports check characters for
                 both code types.
Size:            4.25"D X 2.6"W X 1.125"H
Material:        ABS Plastic Enclosure
Connectors:      DB9P "Squeeze" connector
                 For Scanner.
                 DB9S for Communications
Temperature:     Operating: 0° to 70°C
                 Storage: -40° to 70°C

The following characteristics are configurable by the user using a serial terminal, or PC configured as a terminal.

Code Types:       Code 39(normal or extended)
                  or Interleaved 2 of 5
Label Length:     to 20 characters
Check Character:  For Code 39, Interleaved 2 of 5
Start/Stop Char.  Code 39
Scanner type:     Laser or Wand

Type:             RS-232, RS-485 or Keyboard Wedge
Baud Rate:        2400 to 19,200
Parity:           Mark, Space, Even, Odd
Stop Bits:        1 or 2
Flow Control:     RTS/CTS Handshake
Messages:         A header field of up to 10
                  characters may be programmed.

Operating Modes:
Normal Mode:      Read and Transmitt. For use with
                  RS-232 Communications.
Polling Mode:     For use with RS-485 multidrop.
Data Change:      Only one transmission will be 
                  made for a given barcode label.
Keyboard Wedge:   Emulates PC/AT Keyboard.
Compare Mode:     Compares current barcode to
                  one stored in a buffer.

Keyboard Wedge:
Normal Mode:      Does not transmit unprinatble
                  ASCII Characters.
Translate Mode:   Translates unprintable ASCII
                  characters to keyboard keys.

DA2001 - Decoder with RS-232 and RS-485
DA2002 - Decoder with Keyboard Wedge and 5-PIN DIN Connector
DA2003 - Decoder with Keyboard Wedge and 6-PIN DIN Connector
Custom Sensors Inc