Cognex DataMan - Page 61

// Formatting helper function
function zero_prefix(num, size)
{
var s = "000000000" + num;
return s.substr(s.length - size);
}
function CommHandler()
{
// The current protocol state
var cmf400_status = CMF400_PROTOCOL_STATUS.STOPPED;
function _configTimedOut()
{
if (cmf400_status == CMF400_PROTOCOL_STATUS_CONFIGURING)
{
cmf400_status = CMF400_PROTOCOL_STATUS_STOPPED;
this.setTimer(30.0);
onTimer = _onSync;
}
}
function _onSync()
{
if (cmf400_status == CMF400_PROTOCOL_STATUS.SYNCRONIZING)
{
this.send(cmf400_protocol_stx + cmf400_gateway_init +
cmf400_protocol_etx);
this.setTimer(1.0);
onTimer = _onSync;
}
}
function _onTimer()
{
if (cmf400_status == CMF400_PROTOCOL_STATUS.STOPPED)
{
cmf400_status = CMF400_PROTOCOL_STATUS.SYNCRONIZING;
return;
}
}
return {
onConnect: function (peerName)
{
expectFramed("", cmf400_protocol_etx, 510); //
is 510 an arbitrary limit?
cmf400_status = CMF400_PROTOCOL_
STATUS.SYNCRONIZING;
this.onTimer = _onSync;
this.setTimer(0.0001);
return true;
61
DataMan Application Development