Cognex DataMan - Page 58

// Data Formatting:
var comm_handler = new Array(0);
// Converts read data to all upper case. Single code only.
function onResult (decodeResults, readerProperties, output) {
if (decodeResults[0].decoded) {
output.content = decodeResults[0].content+'\r\n';
for (var i = 0; i < comm_handler.length; i++)
{
comm_handler[i].resetHeartBeat();
}
}
}
// Communication:
// Heart beat example without disturbing the DMCC communication function CommHandler() {
var beat_timer = 10.0; // beat timer in sec
var peer_name;
return {
onConnect: function (peerName)
{
peer_name = peerName;
this.resetHeartBeat(); // initial timer
this.expectFramed("\0", "\0", 128); // some pattern
unlikely to happen
comm_handler.push(this); // register the handler for
results
// enable the handler for this connection:
return true;
},
onDisconnect: function ()
{
var index = comm_handler.indexOf(this)
comm_handler.splice(index, 1);
},
onError: function (errorMsg)
{
},
onExpectedData: function (inputString) {
return false;
},
onUnexpectedData: function (inputString) {
return false;
},
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DataMan Application Development