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HBCR-2210 HP | Alldatasheet

Document overview

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Technical content

Features

• Ideal for Hand Scanning and Non-contact Laser Scanning

Applications

• Supports 7 Industry Standard Bar Code Symbologies
• Automatic Code Recognition
• Choice of Parallel or Serial Interface
• Full Duplex ASCII Interface
• Extensive Configuration Control
• Optical and Escape Sequence Configuration
• Input and Output Buffering
• Low Current (18 mA) CMOS Technology
• 40 Pin DIP and 44 Pin PLCC Packages
• Audio and Visual Feedback Control
• EEPROM Support for Nonvolatile Configuration
• Single +5 Volt Supply invest in the development of bar code decoding software. The bar code decoder ICs are compatible with most hand held scanners and some medium speed machine mounted laser heads. The HBCR-2210 series is compatible with fixed beam non- contact scanners, digital wands, and slot readers. In addition, the decoder is optimized for use with the Symbol Technologies moving beam laser scanners, but is also compatible with many other moving beam non-contact laser scanners with a similar interface protocol. The HBCR-2210 series decoder ICs are excellent decoding solu

tions for a number of stationary scanning applications found in automated systems. The scan rate for moving beam applications should be similar to the scan rates for hand held laser scanners (35 to 45 scans per second). The scan speed for fixed beam applications should be similar to the scan speeds typical of wands and slot readers. For moving beam applications, it is necessary for the scanner to utilize the three laser control lines. The HBCR-2210 series decodes the most popular bar code sym- bologies now in use in applica- tions in the industrial, retail, government and medical markets:

• Code 39 (Standard or Extended)
• Interleaved 2 of 5
• UPC A, E
• EAN/JAN 8, 13
• Codabar
• Code 128
• Code 11
• MSI Code When more than one symbology is enabled, the bar code being scanned will automatically be recognized and decoded, except for Standard versus Extended Code 39, which are mutually exclusive. Bi-directional scanning is allowed for all bar codes except UPC/EAN/JAN with sup- plemental digits, which must be scanned with the supplemental digits last. The I/O for the decode IC is full duplex, 7 bit ASCII. Both serial and parallel interfacing are available. The serial interface can be converted to an RS232C interface or connected directly to another microprocessor for data processing. The parallel interface can be connected to a 74HC646 octal bus transceiver chip (or an equivalent part). Feedback to the operator is accomplished by signals for an LED and a beeper. In addition, there are many programmable functions that cover such items as code selection, good read beep tone, Header and Trailer buffers, laser scanning control, beeper tone, etc. See Table 2 for a complete list. Performance Features Bar Codes Supported Code 39 is an alphanumeric code, while Extended Code 39 encodes the full 128 ASCII character set by pairing Code 39 characters. Both can be read bi-directionally with message lengths of up to 32 characters. An optional checksum character can be used with these codes, and the ICs can be config- ured to verify this character prior to data transmission. Interleaved 2 of 5 code, a com- pact numeric only bar code, can also be read bi-directionally with message lengths from 4 to 32 characters. To enhance data accuracy, optional checksum character verification and/or message length checking can be enabled. The following versions of UPC, EAN and JAN bar codes can be read bi-directionally: UPC-A, UPC-E, EAN-8, EAN-13, JAN-8, and JAN-13. All versions can be enabled simultaneously or decoding can be restricted to only the UPC codes. UPC, EAN, and JAN codes printed with complementary two or five digit supplemental encodations can be read in two different ways. If the codes are enabled without the supplemental encodations, then only the main part of symbols printed with supplemental encodations will be read. If the reading of supplemental encodations is enabled, then only symbols with these supplements will be read. When supplemental encodations are enabled, the bar code symbols must be read in a direction which results in the supplements being scanned last. Codabar, a numeric only bar code with special characters, can be read bi-directionally for message lengths up to 32 characters. The decode IC can be configured to transmit or suppress the Codabar start/stop characters. Code 128, a full ASCII symbology, can be scanned bi- directionally with message lengths of up to 32 characters. Code 11 is a numeric, high density code with one special character, the hyphen (-). Verification of one or two check characters must be enabled, and the check character(s) are always transmitted. This code can be scanned bi-directionally. MSI Code is a numeric, continu- ous code, with message lengths up to 32 characters. The check digit, a modulo 10 checksum, is always verified and transmitted. This code can be scanned bi- directionally. Scanner Input The HBCR-2210 decode IC is designed to accept data from hand held digital scanners or slot readers with the following logic state: black = high, white = low. The same decode IC also accepts

scanners with the opposite logic states: black = low, white = high. The scanner type pin (SCT) on the HBCR-2210 series must be driven prior to power up or hard reset to identify the type of scanner connected. In the HBCR-2210 series ICs, the automatic laser shutoff feature delay time is adjustable as a con- figuration option. Applications which require increased accuracy may need the redundancy check feature. Scanner input can be disabled by software command. This allows an application program to control when an operator can enter data, preventing inadvertent data entry. It also allows the program to verify each scan before enabling subsequent scans. The HBCR- 2210 series also offers two Single Read Modes which allow the application program to stop bar code data entry until a “Next Read” command is received, allowing the host computer to process data transmissions before enabling subsequent reads. Configuration Control and Non-volatile Storage Configuration of the decoder IC is done by any of three methods. A minimal subset of key options can be “hardwired” – controlled by electrically strapping specified pins on the decoder IC itself. Which pins affect configuration depends on the selection of serial or parallel interface. Alternatively, ASCII characters in the form of HP Escape Sequences (a format common to HP decoder ICs) can be sent to the serial or parallel I/O port; these commands can be used to control all configurable options. A third method is optical configuration, which makes use of special bar code menus sup- plied by HP. Menu labels can be created to modify any configur- able options. A summary of the decoder IC features and applicable configuration methods for each is presented in Tables 2 and 3. Once configuration has been set, it can be stored in an optional non-volatile memory, if included in the decoder circuit. When the EEP pin is tied high, the decoder IC drives I/O lines compatible with the widely available 9346/ 93C46 family of serial EEPROMS. The configuration is thereby saved during power down of the system and automatically reloaded at power up. Escape sequence commands allow explicit storage and recall of configuration settings. When using optical configuration, storage is automatic. If the EEP pin is tied low, the EEPROM is not used, so only hardwired configuration options are saved through powerdown; all others are set to default values at powerup. Table 2 shows default values of all features. Data Communications The serial port supports a wide range of baud rates, parities, and stop bits as described in Table 2. Software control of data trans- mission can be accomplished with a standard Xon/Xoff (DC1/ DC3) handshake. The decode IC also supports an RTS/CTS hardware handshake. The parallel port data has config- urable parity. When the SMD pin is tied low, several pins pertain- ing to the serial port change function to control a parallel port instead. Pins 1 through 5 on DIP packages assume the function of handshake lines for the parallel port. The port itself is an external '646 family octal bus transceiver. Processor pins 10 and 11 (TXD and RXD in serial mode) now control the transceiver chip along with pins 16 and 17, RD and WR. Alternative circuits using SSI latch chips can be substituted for the '646 implementation to customize the function of the parallel port to a particular bus configuration. Feedback Features Both audio and visual feedback are possible with the HBCR-2210 series. In both cases, the outputs from the ICs should be buffered before driving the actual feed- back transducer. An LED or beeper connected to the decoder IC can be controlled directly by the IC, with signals generated by successful decodes, or can be controlled by the host system. In addition, the tone of the beeper can be configured to be one of 16 different frequencies, or can be silenced. Power Requirements The decoder IC operates from a +5 volt DC power supply. The maximum current draw is 18 mA. The maximum power supply ripple voltage should be less than 100 mV, peak-to-peak. Handling Precautions The decoder ICs are extremely sensitive to electrostatic discharge (ESD). It is important that proper anti-static procedures be observed when handling the ICs. The package should not be

Table 1. Ordering Information

1. Maximum power supply ripple of 100 mV peak to peak.
2. The HBCR-2210 series uses a 11.059 MHz crystal. For different crystal frequencies. multiply the specified baud rate and beeper

frequencies by (crystal frequency/11.059 MHz) and multiply the element time interval ranges by (11.059 MHz/crystal frequency).

1. At the specified crystal frequency.
2. Corresponds to a scan rate of 35 to 45 scans per second.
3. Voltage on any pin with respect to ground.

• Data output formats
• I/O interfaces
• Laser input timing diagrams
• Escape sequence syntax and functionality
• Example schematics
• All configurable options
• Bar code menus
• Scanner positioning and tilt
• Sample bar code symbols
• Appendices describing bar code symbologies

0.75 VCC VI OH = -30 µA

0.9 VCC VI OH = -10 µA

0.75 VCC VI OH = -150 µA

0.9 VCC VI OH = -40 µA

ICC Idle Mode Power – – 9 mA Note 7.

1. Applies only to HBCR-2210 and -2211 in Wand Mode or Laser Mode with Laser Idling enabled with no scanning or I/O operation in

Table 2. Summary of Features and Configurations - HBCR-2210 Series coding options are satisfied.

Feature Function or Value Selection Default Setting Check Character For Code 39 Software Disabled Verification Enable For Interleaved 2 of 5 Software Disabled When enabled, the check character at the end of the bar code data is verified by the decoder Check Character For both Code 39 and Interleaved Software Disabled Transmission 2 of 5, the check characters Enable verified by the reader are included at the end of the decoded message Code 39 Full ASCII Extended Code 39 data will be Software Disabled Conversion Enable converted to ASCII characters UPC/EAN/JAN UPC/EAN/JAN vs. UPC only Software UPC/EAN/JAN Decoding Options Enable 2 or 5 digit supplements Enabled Selection Supplements Disabled Autodiscrimination of tags with Software Disabled and without supplements Codabar Data Transmit or suppress start/stop Software Transmit Start/Stop characters Transmission Enable Code 11 Check Digit Selection of 1 or 2 check digits Software 1 check digit Verification Selection Baud Rates 150, 300, 600, 1200, 2400, Both Depends on pins 4800, 9600, 19200 BR1, BR0, and SMD Parity 0s, 1s, Odd, Even Both Depends on pins EEP, PT1 and PT0 Stop Bits 1 or 2 Both Depends on pins SMD and STB RTS/CTS Pacing Request-To-Send/Clear-To-Send Software Enabled Enable Pacing controls serial port data transmission Xon/Xoff Pacing Controls data transmission on Software Disabled Enable serial or parallel port by means of control characters sent to decoder IC Transmitted Char- Specifies whether a delay is Software Disabled acter Delay Enable inserted between characters transmitted on the serial port Transmitted Char- Specifies the number of milli- Software 20 msec acter Delay seconds to insert between Selection completion of transmission of one character and beginning of transmission of the next (1 to 250 ms) (continued)

Feature Function or Value Selection Default Setting Header Selection A string of characters pre- Software none pended to the decoded message (10 characters, maximum) Trailer Selection A string of characters appended Software C R LF to the decoded message (10 characters, maximum) Reader Address Reader Address is transmitted at Software none Selection the beginning of decoded and No- Read messages for polling purposes. (1 character) Message Ready/Not The Message Ready/Not Ready re- Software ACK/NAK Ready Response sponse is transmitted after the Selection reader receives a status request type 3 and is used with Single Read Mode 2. (1 character each) No-Read Message The No-Read Message configured Software none Selection is transmitted each time there is an unsuccessful read (10 characters, maximum) No-Read Controls whether the decoder Software Disabled Recognition detects unsuccessful reads Enable and sends the No-Read Message Single Read Mode 1 Controls reading and automatic Software Disabled Enable transmission of decoded messages Single Read Mode 2 Controls separate reading of Software Disabled Enable bar codes and triggering decoded message transmission Output Buffering Characters to be transmitted Software Disabled Enable are entered into a 256 character queue for use with a pacing protocol Scanner Type Determines whether a wand or Hardwire Depends on pin Selection laser is to be used SCT Laser Shutoff Defines laser on time prior to Software 3 seconds Delay Selection automatic shutoff, from 0 to 10 seconds in 100 ms steps Laser Redundancy Enables requirement for two Software Disabled Check Enable consecutive, identical decodes for a good read Continuous Laser When enabled, the laser is turned Software Disabled Read Mode Enable on permanently instead of waiting for the trigger to be pulled (continued)

Feature Function or Value Selection Default Setting Laser Connection When enabled, the scanner type Software Disabled Detection Enable pin is ignored at powerup. Instead, the decoder tests for a laser scanner to determine scanner type Laser Trigger When enabled, the laser scanner Software Disabled Latch Mode Enable continues to scan after the trigger has been released until either the laser shutoff delay period elapses or a read occurs Laser Idling Enable When enabled, the processor idles Software Disabled while waiting for the trigger to be pulled, reducing current draw Code ID Character Code ID character serves to Software Code 39 = a Selection identify the symbology of the Int 2/5 = b decoded message UPC/EAN = c Codabar = d Code 128 = e Code 11 = f MSI Code = g Code ID Character Code ID character can be added Software Disabled Transmission to the beginning of each decoded Enable message Bar Code Menu Verification of individual Software Disabled Scan Response configuration menu scans via Enable transmission of response message Hard Reset “Ready 12.4” C R LF will be Software Disabled Message Enable transmitted to host upon hard reset ROM, RAM Self When enabled, ROM and RAM are Software Enabled Test Enable tested after a Hard Reset Good Read Beep Selects Good Read Beep Software Tone 12 Tone Selection tones (1 to 16) LED Control Controls the LED function: Selection Automatic Flash Mode Enabled Automatic Feedback Mode Disabled LED Active Defines logic level of LED ON Software Active High Level Selection state LED, Beeper Feed- Suppresses LED and Beeper Software Not Suppressed back Suppression operation for systems without Enable those annunciators Wand Input Data from wand scans is collected Software Disabled Buffering Enable continuously in an input buffer to increase throughput Quiescent State of The quiescent state of the pro- Software High Address Line cessor memory bus address lines Selection A8, A9, A10 can be defined for additional I/O interfacing

Table 3. Summary of Commands - HBCR-2210 Series

• General status message showing symbology of last message read, error conditions, etc.
• Message Ready/Not Ready response (for Single Read Mode 2) Sound Tone This command causes the reader to sound a tone at the selected pitch for approximately 100 milliseconds Configuration Control There are three operations that manipulate the decoder configuration as a block.
• Set default configuration
• Save configuration in non-volatile memory
• Recall non-volatile configuration Execute Pending For use with laser scanning, this command causes immediate execution of Command previous commands that would otherwise be postponed until the laser scan finishes

Table 4. Summary of Other Features - HBCR-2210 Series

• ROM SELF TEST FAILED
• EEPROM SELF TEST FAILED
• RAM SELF TEST FAILED EEPROM Fault An appropriate message is transmitted at power up if the EEPROM Recognition checksum is incorrect.
• EEPROM FAULT

degrading the IC performance. Figure 3. HBCR-2210 Serial Pinout.

1. Cycle B must be done in atmosphere of <5% relative

The HP Bar Code Decode IC is warranted for a period of one year after purchase covering defects in material and workman- ship. Hewlett-Packard will repair or, at its option, replace products that prove to be defective in material or workmanship under proper use during the warranty period. NO OTHER WARRANTIES ARE EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HEWLETT-PACKARD IS NOT LIABLE FOR CONSE- QUENTIAL DAMAGES. For additional warranty or service information please contact your local Hewlett-Packard sales representative or authorized distributor.