Lutron TCP/IP Comms

Hi,
I was wondering if anyone had managed to get sucesful reliable comunications with luton via TCP/IP

I've have managed to get a connection established and a responce back from the Lutron CPU and it enters the LOGIN: promt into the buffer. This also triggers the Active Find statment and the sends a string to the debug port 0. However, it just seems to hang when trying to send it the login details. I've cut the code right back to basics and still get this problem. I have also changed the IP address to open a connection to my PC with telnet and all seem to be in order, but I cannot get the system to comunicate with the Lutron CPU ? any ideads. I can also happily logonto the Lutron CPU via Telnet.

The diagnostics window seems to flash like it trying to tell me something.

I also noticed in the Diagnostics window a DDD statment saying it has found a dynamic device and its the Lutron Processor. Could this be conflicting with the manual IP connection I'm trying to establish ?

PROGRAM_NAME='IP Comms_Basic'

DEFINE_DEVICE
dvTP		=	205:1:5
dvLUTRON	=	0:6:5	// CLIENT CONNECTION - DEVICE BEING CONTROLLED

DEFINE_CONSTANT
TCP = 1
UDP = 2

DEFINE_VARIABLE
CHAR LUTRONBuff[2048]

DEFINE_MUTUALLY_EXCLUSIVE

DEFINE_START
CREATE_BUFFER dvLUTRON,LUTRONBuff

DEFINE_EVENT

BUTTON_EVENT [dvTP,1]		// OPEN COMMS TO IP DEVIVE
    {
    PUSH:
	{
	IP_CLIENT_OPEN (dvLUTRON.PORT,'192.168.10.70',23,TCP) 
	}
    }
    
BUTTON_EVENT [dvTP,2]		// CLOSE COMMS
{
    PUSH:
    {
    IP_CLIENT_CLOSE (dvLUTRON.PORT)
    }
}


BUTTON_EVENT [dvTP,4]
{
    PUSH:
    {
    SEND_STRING dvLUTRON, "'amx,password', $0D"
    }
}

BUTTON_EVENT [dvTP,5]
{
    PUSH:
    {
    SEND_STRING dvLUTRON, "$0D"
    }
}

DATA_EVENT[dvLUTRON]
    {
    STRING:
	{
	SEND_STRING 0,"'IH_Debug:  (via string debug) ',Data.Text"
	SELECT			// LOGIN REQUEST
	    {
	    ACTIVE (FIND_STRING(DATA.TEXT,'LOGIN:',1)):		// REQUEST FOR USER NAME
		{
		// SEND_STRING dvLUTRON, "'amx,password', $0D"		// SEND USER NAME
		SEND_STRING 0, "'IHDebug: Lutron Login: Prompt seen'"
		}
	    }
	}
    ONLINE:
	{
	// SEND_STRING 0,"'IH_Debug:  (via online debug)',Data.SourceIP,' online: client'"
	}	
    OFFLINE:
	{
	// SEND_STRING 0,"'IH_Debug:  (via offline debug)',Data.SourceIP,' offline: client'"
	}
    ONERROR:
	{
	// SEND_STRING 0,"'IH_Debug: LUTRON error: client=',ITOA(Data.Number)"
	}
    }