Is anyone familiar around here with Cognex DMCC scripting?
I am trying to send a heartbeat. Maybe auto re-booting down the road… I am running 60 scanners over TCP connections drivers. And they hang up a lot. It’d be really cool if they lost connection to reboot. But, you’d have to know the port of server? And its random
Figured it was worth a shot asking here. 
Cause I have no idea lol I’ll just keep playing with it till something happens.
Thanks!
// 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();
}
}
}
//Output different results to various protocols
function onResult (decodeResults, readerProperties, output)
{
if (decodeResults[0].decoded)
{
var mymsg = decodeResults[0].content;
// output['Serial'] is identical to output.Serial
//output['Serial'] = "serial: " + mymsg;
output.Telnet = "telnet: " + mymsg;
output.content = mymsg;
}
else
{
output.content = "bad read";
}
}
// 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;
},
onTimer: function () {
today = new Date();
var msg = today.getSeconds() * 1000 + today.getMilliseconds();
num_send = this.send(peer_name + ': time is: ' + msg + '\r\n');
this.resetHeartBeat(); // schedule next timer event [sec]
},
resetHeartBeat: function () {
this.setTimer(beat_timer); // schedule next timer event [sec]
}
};
}