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.
- 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()