Chapter 6 Scanning Functions; Data Verification Mode; Data Verification Read Procedure - Denso AT27Q-SB User Manual

Chapter 6 Scanning Functions

6.1 Data Verification Mode

The data verification mode verifies the code data read against the master data stored in the scanner and reports the
match status with data output.
Data verification read is available in two types--"n-point verification" and "2-point verification," which can be
selected with the configuration software (ScannerSetting_2D).
Selecting the n-point verification requires registering master data only one time for 1:n verification. The scanner
verifies all code data read after registration against the master data.
The 2-point verification refers to 1:1 verification. Selecting it requires registering master data each time preceding
code scanning. After registration of master data, the scanner reads a code, verifies the code data read against the
master data and then becomes ready to register new master data. This way, the 2-point verification read alternately
repeats master data registration and code scanning.
In n-point verification read, master data can be registered with "preset master registration" or "scan master
registration"; in 2-point verification read, with "scan master registration" only. The preset master registration registers
master data with the configuration software (ScannerSetting_2D) beforehand, and the scan master registration, by
scanning a master code label.
The master data registered by "preset master registration" or "scan master registration" will be sent to the host
computer when you scan the "Output master data" code given on page 16.
The verification parameters can be specified with the configuration software (ScannerSetting_2D).

6.1.1 Data verification read procedure

 n-point verification
Preset master registration
This is available only when n-point verification is selected. Register the code type and data to be used for verification
using the configuration software (ScannerSetting_2D). Up to 99 digits can be registered.
The registered master data will be preserved even if the scanner is turned off. To clear it, first clear the registered
master data stored in the host computer with the configuration software (ScannerSetting_2D) and then send the new
setting data to the scanner.
Scan master registration
1) Switch the scanner to the Data Verification mode.
2) Send a scan entry control command "E" from the host to the scanner. (Refer to Appendix 2 for control commands.)
The indicator LED lights in green.
3) Use the scanner to scan a master code to be registered. (The scanner operates in the trigger switch operating mode
currently set.) After registration of master data, the indicator LED turns blue and then goes OFF.
4) Use the scanner to scan a target code. The scanner verifies the code read against the master data registered and
then outputs the result. After a successful read, the indicator LED lights in blue.
During the registration operation above, if the master data has fewer characters than specified (e.g., less than the
specified verification start position), the registration operation aborts with an error.
Even if "Preset master registration" has been made, you can make "Scan master registration." If both have been made,
the number of characters to verify that has been specified with "Preset master registration" and the master data that has
been specified with "Scan master registration" will be valid.
Note: The registered master data will be cleared when you customize the scanner by modifying the parameters with
the configuration software (ScannerSetting_2D) or a batch-process QR code symbol.
Note: If no master data has been entered by either "Preset master registration" or "Scan master registration," the
indicator LED flashes in red, during which it is impossible to scan codes.
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