Page 103 - MetroSelect Single-Line Configuration Guide
P. 103

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              IS4823 and IS4825 Scan Engines


          Operating Modes
          Activation Modes
                               *  Activate Scanning with the External Trigger –
            ³  4  1  8  3  0  4    An external I/O pin is used to enable the scanning
                                cycle. A High-to-Low transition on the I/O signal is
                                used to activate scanning. The signal must be
                                deactivated (HIGH) and re-activated for
                                subsequent scanning cycles. The scanning cycle
                                is terminated based on the default period of time
                                (2 seconds), a variable period of time, when the
                                I/O signal is deactivated (Low-to-High), or when a
                                bar code is scanned and transmitted.
                                 Activate Scanning on Receipt of the <DC2>

            ³  1  1  8  1  1  0    Character – A received <DC2> character initiates
                                the scanning cycle. The scanning cycle is
                                terminated based on the default period of time
                                (2 seconds), variable laser timeout selected, or
                                when a bar code is scanned and transmitted.

                                 Activate Scanning Using D/E – A received ‘E’
            ³  1  2  0  3  1  6     character initiates the scanning cycle. The
                                scanning cycle is terminated based on the default
                                period of time (2 seconds), variable laser timeout
                                selected, or receipt of a ‘D’ or when a bar code is
                                scanned and transmitted.

                                 Activate Scanning with Address – A
            ³  1  1  7  4  1  5    configurable address character is used to initiate
                                scanning. The scanning cycle is terminated based
                                on the default period of time (2 seconds), variable
                                laser timeout selected, or when a bar code is
                                scanned and transmitted.


                               ~  Address Value – Use this bar code with a code
            ³  9  1  7  5  0  0    byte sequence (on page 16–1) that represents
                                the desired character to be used to initiate
                                scanning. An ASCII reference table is available
                                on page 16–3.





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