Client / Gateway Scripts-BarcodeScanner

# Gateway Tag Change Script to decode a UPC, EAN, GTIN barcode

# Setup the logger to see activity on the Ignition Gateway console
# or just use print statements and look at wrapper.log file.
from org.apache.log4j import Logger
log = Logger.getLogger('GTINDecoder')
 
# Import java needed classes
from java.util import List
 
# Only execute if not initializing and tag value is not null
if (initialChange == 0 and newValue.value != None):
 # Get rawBarcode from tag value
 rawBarcode = newValue.value        
 
 # Get only the predefined regex patterns for GTIN-12 UPC, GTIN-13 EAN, & GTIN-14
 patterns = system.barcode.scanner.getPatternList("GTIN-12,GTIN-13,GTIN-14", "")
 
 # Call the decode method for a single pass search with a preamble of \u0002 ascii STX (start of text),
 # and no postamble, or separator in barcode
 results = system.barcode.scanner.decode(rawBarcode, "SinglePass", patterns, u"\u0002", "", "")
 
 if (results.hasErrorMessage()):
         # Log error message
         log.info("Error from barcode scan: " + results.getErrorMessage())
 else:
         # Get a Python dictionary of the decoding results
         resultsDict = results.toDict()
 
         # Loop through results        
         for key,value in resultsDict.items():
                 log.info("Key: " + key + ", Value: " + value.toString())

# Gateway Tag Change Script to decode a GS1 Active Matrix barcode
 
# Setup the logger to see activity on the Ignition Gateway console
# or just use print statements and look at wrapper.log file.
from org.apache.log4j import Logger
log = Logger.getLogger('GS1Decoder')
 
# Import java needed classes
from java.util import List
 
# Only execute if not initializing and tag value is not null
if (initialChange == 0 and newValue.value != None):
 # Get rawBarcode from tag value
 rawBarcode = newValue.value        
 
 # Get the predefined regex patterns for GS1 Application Identifer (AI) we are interested in, The FNC1
 # separator for the variable length AIs is Unicode \u001d and will be inserted into the patterns.
 patterns = system.barcode.scanner.getPatternList("GS1-10,GS1-17,GS1-01,GS1-390,GS1-310", u"\u001d")           
 
 #Uncomment to see patterns in list
 #for p in patterns:
         #log.info("key=%s regex=%s" %(p.getKey(), p.getRegexPattern()))
 
 # Call the decode method for a GS1 consume search with a preamble of ]d1,  
 # and postamble of \u001a (LF line feed), and separator of \u001d (GS Group Separator for FNC1) in barcode
 results = system.barcode.scanner.decode(rawBarcode, "Consume", patterns, u"]d1", u"\u001a", u"\u000d")
 
 if (results.hasErrorMessage()):
         # Log error message
         log.info("Error from barcode scan: " + results.getErrorMessage())
 if (results.hasUnmatched()):
         # Log unmatched
         log.info("Unmatched: " + results.getUnmatched())
 
 # Get a Python dictionary of the decoding results
 resultsDict = results.toDict()
 
 # Loop through results        
 for key,value in resultsDict.items():
         log.info("Key: " + key + ", Value: " + value.toString())

# Gateway Tag Change Script to decode a custom regex pattern
 
# Setup the logger to see activity on the Ignition Gateway console
# or just use print statements and look at wrapper.log file.
from org.apache.log4j import Logger
log = Logger.getLogger('CustomDecoder')
 
# Import java needed classes
from java.util import List
 
# Only execute if not initializing and tag value is not null
if (initialChange == 0 and newValue.value != None):
 # Get rawBarcode from tag value
 rawBarcode = newValue.value        
 
 # Create a new empty patterns list
 patterns = []
 
 # Create customer barcode pattern and add to list
 pattern = system.barcode.scanner.getNewBarcodePattern("My Pattern Name", "MyPatternKey", u"^(\d{8})$")
 patterns.append(pattern)
 
 # Call the decode method for a single pass search with no preamble, postamble, or separator in barcode
 results = system.barcode.scanner.decode(rawBarcode, "SinglePass", patterns, "", "", "")
 
 if (results.hasErrorMessage()):
         # Log error message
         log.info("Error from barcode scan: " + results.getErrorMessage())
 
 # Get a Python dictionary of the decoding results
 resultDict = results.toDict()
 
 # Loop through results        
 for key,value in resultDict.items():
         log.info("Key: " + key + ", Value: " + value.toString())