Class Controller

java.lang.Object

javaforce.controls.Controller

public class Controller
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	Controller.datatype	Data types for write() function.

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	debug
Exception	lastException
static double	rate

Constructor Summary

Constructors

Constructor	Description
Controller()

Method Summary

Modifier and Type	Method	Description
boolean	connect(String url)	Connects to a PLC.
boolean	disconnect()	Disconnects from PLC.
boolean	isBE()	Returns true is controller is Big Endian byte order.
boolean	isConnected()
boolean	isLE()
byte[]	read(String addr)	Reads data from PLC.
byte[][]	read(String[] addr)	Reads multiple data tags from PLC.
void	setRate(float rate)
void	setSOCKS(String host)	Connect to PLC via a SOCKS4 server.
void	setTimeout(int ms)	Specify timeout (ms) for socket connect and read operations.
boolean	write(String addr, byte[] data)	Writes data to PLC.
boolean	write(String addr, byte[] data, Controller.datatype type)	Writes data to PLC.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

rate

public static double rate

lastException

public Exception lastException

debug

public static boolean debug

Constructor Details

Controller

public Controller()

Method Details

setRate

public void setRate(float rate)

setTimeout

public void setTimeout(int ms)

Specify timeout (ms) for socket connect and read operations.

Parameters:

ms - = timeout (default = 3000)

connect

public boolean connect(String url)

Connects to a PLC. url = "S7:host" url = "MODBUS:host" url = "AB:host" url = "NI:device/options" url = "MIC:name" (int16 data type , %lt;default%gt; will use default mic)

setSOCKS

public void setSOCKS(String host)

Connect to PLC via a SOCKS4 server. Must call this before calling connect(String url)

Parameters:

host - = IP4 address of SOCKS4 server.

disconnect

public boolean disconnect()

Disconnects from PLC.

write

public boolean write(String addr,
 byte[] data)

Writes data to PLC.

write

public boolean write(String addr,
 byte[] data,
 Controller.datatype type)

Writes data to PLC. datatype is required for AB controllers.

read

public byte[] read(String addr)

Reads data from PLC.

read

public byte[][] read(String[] addr)

Reads multiple data tags from PLC. (only S7 is currently supported)

isConnected

public boolean isConnected()

isBE

public boolean isBE()

Returns true is controller is Big Endian byte order.

isLE

public boolean isLE()