public void Disconnect()
{
if (protocol == null)
{
System.Diagnostics.Debug.WriteLine("Disconnect - protocol = null");
return;
}
protocol.closeProtocol();
protocol = null;
}
public bool Connect(BaseCommConfig commCfg, out string errorStr)
{
errorStr = "";
SerialCommConfig serCfg = commCfg as SerialCommConfig;
if (protocol != null)
{
if (commPort == serCfg.addressMajor)
{
return(true);
}
else
{
errorStr = "Connected to a different device";
return(false);
}
}
try {
protocol = new MbusRtuMasterProtocol();
} catch (OutOfMemoryException ex) {
return(false);
}
slaveAddr = serCfg.devId;
protocol.timeout = serCfg.timeout;
protocol.retryCnt = serCfg.retryCnt;
protocol.pollDelay = serCfg.pollDelay;
int res = protocol.openProtocol(
serCfg.addressMajor, serCfg.addressMinor, (int)serCfg.dataBits,
(int)serCfg.stopBits, (int)serCfg.parity);
if ((res == BusProtocolErrors.FTALK_SUCCESS))
{
commPort = serCfg.addressMajor;
errorStr = $"Modbus/TCP Device: {serCfg.addressMajor} Baud: {serCfg.addressMinor} opened successfully";
return(true);
}
else
{
errorStr = $"Could not open protocol, error was: {BusProtocolErrors.getBusProtocolErrorText(res)}";
protocol = null;
return(false);
}
}