PLCServer (ErgoTech VIB/TransSECS Scripting API)

java.lang.Object
- com.ergotech.vib.servers.DataSource
- - com.ergotech.vib.servers.SimpleDataSource
  - - com.ergotech.vib.manipulators.Manipulator
    - - com.ergotech.vib.manipulators.SimpleManipulator
      - com.ergotech.vib.servers.plc.PLCServer

All Implemented Interfaces:

java.beans.PropertyChangeListener, java.util.EventListener

Direct Known Subclasses:

ControlLogixServer, DF1Server, FinsServer, HostLinkServer, MelsecServer, ModbusServer, PPIServer
```
public abstract class PLCServer
extends SimpleManipulator
implements java.beans.PropertyChangeListener
```
This is the abstract superclass of the PLC protocol. PLC devices are set up as flat memory spaces. The "registers" are usually 16 bit words. PLC usually can't, per se, read bits, but reads bytes. To use a similar address block object and a similar device reader for both bits and bytes/words we provide a convention to the offset from zero of the 16 bit word ("getWordReg") and a bit number within this word. For words the "getWordReg" returns the register-1 (perhaps minus an offset), for bits it returns (reg-1)/16 (word length). For regs the bit returns 0, or some arbitrary value, for bits it return (reg%16). For completeness there is a bitCount, so that I can read an arbitary number of bits (<16) from a word or bit field. To make all this work, the server itself has the job of decoding the incoming array of values from the PLC.

Nested Class Summary
- Nested classes/interfaces inherited from class com.ergotech.vib.servers.SimpleDataSource
  SimpleDataSource.NameEditorData
- Nested classes/interfaces inherited from class com.ergotech.vib.servers.DataSource
  DataSource.Writable

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`BINARY_VALUE` The value type BINARY
`static int`	`BOOLEAN_VALUE` The value type BOOLEAN
`static int`	`BOTHSWAP` Definition for point swap style.
`static int`	`BYTESWAP` Definition for point swap style.
`static java.lang.String`	`cvsRev`
`static int`	`DOUBLE_WORD_VALUE` The value type DOUBLE WORD
`static int`	`FLOAT_VALUE` The value type FLOAT
`static int`	`NOSWAP` Definition for point swap style.
`static int`	`STRING_VALUE` The value type STRING
`static int`	`WORD_VALUE` The value type WORD
`static int`	`WORDSWAP` Definition for point swap style.

Fields inherited from class com.ergotech.vib.manipulators.Manipulator
UPDATE_DISPLAYED_VALUE, VALUE_INPUT

Fields inherited from class com.ergotech.vib.servers.SimpleDataSource
customTimer, EXPORT_READ_ONLY, EXPORT_READ_WRITE, NO_EXPORT, requiresSyncWrite, sharedTimer, syncWriteTimeout, timebase

Fields inherited from class com.ergotech.vib.servers.DataSource
autoSuspend, AUTOSUSPEND_DEFAULT, AUTOSUSPEND_NEVER, AUTOSUSPEND_NO_LISTENERS, AUTOSUSPEND_NO_LISTENERS_AND_NO_SOURCES, colorHi, colorHiHi, colorLo, colorLoLo, colorNormal, connectors, consoleLogger, currentColor, currentValue, debugLevel, DEFAULT_AUTOSUSPEND, dontConnect, gwtLog, hardSuspended, popupLogger, PRIMARYOUTPORTNAME, sendColors, stopped, suspended, timedPopupLogger, traceLogger, valueHi, valueHiHi, valueLo, valueLoLo

Constructor Summary

Constructors
Constructor and Description

PLCServer()
Create the PLCServer.

Constructors
Constructor and Description
`PLCServer()` Create the PLCServer.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`configure()` Sets the timebase of the server.
`void`	`destroy()` Stops the data source.
`int`	`fromBCD(int bcdValue)` Convert the incoming value from a BCD value.
`long`	`fromBCD(int bcdValue, int length)` Convert the incoming value from a BCD value.
`java.lang.String`	`getAddressType()` Return the address type.
`int`	`getBit()` Returns the bit of the word of interest.
`int`	`getBitCount()` Returns the number of bits required from the word of interest.
`abstract int`	`getByteOffset()` Returns the offset of the register of this server.
`int`	`getDefaultQualityForLocation(int location)` The default for all PLC server is to only accept good quality values.
`java.lang.String`	`getDeviceName()` Gets the id of the server.
`PLCDeviceServer`	`getDeviceServer()` Gets the device server.
`int`	`getDirty()` This method returns the value of the dirty flag.
`int`	`getLength()` Returns the number of bytes that need to be read to satisfy this server.
`boolean`	`getOptimizeReads()` Optimize the reading of registers.
`boolean`	`getOutputBytes()` String values will be output as byte[] if set to true
`PLCAddressBlock`	`getPLCAddressBlock()` Returns the address block for this server.
`boolean`	`getSigned()` Values will be signed if this is true.
`int`	`getStaticLocationFor(java.lang.String loc)` This is used by the StaticMethodEvent to determine which valueChanged method to call.
`int`	`getStationAddress()` The destination address for this server.
`int`	`getSwapStyle()` This returns the 32 bit swap style.
`static int`	`inByteSwap(int value, int swapFormat)` This method will swap the bytes in the value according to the swap format.
`boolean`	`isBCD()`
`boolean`	`isConfigured()` Returns true if the configuration of this server is complete.
`boolean`	`isDirty()` This method returns true if the block has been marked as dirty.
`boolean`	`isSimilar(PLCServer server)` This will be called by the PLCAddressBlock to determine if the server is "similar" to this server.
`boolean`	`isTriggerOnThread()`
`static void`	`outByteSwap(int value, int swapFormat, byte[] buf, int offset)` This method will swap the bytes in the value according to the swap format.
`void`	`propertyChange(java.beans.PropertyChangeEvent evt)` This will be called whenever the name of the device server that we are attached to changes.
`void`	`setAddressType(java.lang.String addressType)` Sets the address type.
`void`	`setBCD(boolean bcd)`
`void`	`setBit(int b)` The bit to read if this word is being decomposed into bits.
`void`	`setBitCount(int bc)` Set the bit count.
`void`	`setDeviceName(java.lang.String deviceName)` Sets the name of the device server
`void`	`setDirty(boolean flag)` Dirty tracking.
`void`	`setLength(int length)` Returns the number of bytes that need to be read to satisfy this server.
`void`	`setOptimizeReads(boolean optimize)` Optimize the reading of registers.
`void`	`setOutputBytes(boolean outputBytes)` String values will be output as byte[] if this is true.
`void`	`setSigned(boolean signed)` Values will be signed if this is true.
`void`	`setStationAddress(int stationAddress)` The destination address for this server.
`void`	`setSwapStyle(int swapStyle)` This sets the 32 bit swap style.
`void`	`setTimebase(double newValue)` Sets the timebase of the server.
`void`	`setTriggerOnThread(boolean triggerOnThread)`
`abstract void`	`setValueFrom(byte[] image, int offset, int quality)` Update the value of the server from an address block
`void`	`setValueObject(ValueObjectInterface value)` This method is called by beans and other data sources to set the value of this server.
`boolean`	`shouldBeAdded()` Returns true if the server needs to be added to an address block.
`void`	`start()` This will attach the server to its device server.
`void`	`stop()` Disconnects the server from the device server and then stops the server.
`int`	`toBCD(int intValue)` Convert the incoming value to a BCD value.
`int`	`toBCD(long intValue, int length)` Convert the incoming value to a BCD value.
`java.lang.String`	`toString()` returns a string representation of this server.
`PLCDataBlock`	`triggerRead()` This method will trigger a read of the server and will update the listeners.
`void`	`triggerValueChanged(ValueChangedEvent event)` This allows a server without a timebase to be triggered for a read
`abstract PLCDataBlock`	`validateResponse(PLCDataBlock msgOut, PLCDataBlock msgIn)` Returns true if the response to a write message is correct.
`void`	`valueChanged(int loc, ValueChangedEvent e)` This calls the proper valueChanged method based on the return from the getStaticLocationFor method.
`void`	`VIBEvent(VIBEvent vibEvent)` We are interested in few events.

Methods inherited from class com.ergotech.vib.manipulators.Manipulator
getInPortNames, setBooleanValue, setBoolValue, setByteValue, setDoubleValue, setFloatValue, setIntValue, setLongValue, setShortValue, setStringValue, valueInput

Methods inherited from class com.ergotech.vib.servers.SimpleDataSource
addConnector, addConnector, addDataSource, addPropertyChangeListener, addValueChangedListener, addVetoableChangeListener, authenticatedClientRequest, clientRequest, clientResponse, determineSuspendedStatus, getClassLicenseManager, getContainer, getCustomTimer, getDataSource, getDataSources, getDisplayName, getExportCriteria, getExposeComponentConnections, getName, getOutPortNames, getPullFromServers, getPushData, getPushName, getPushToServers, getServerListData, getTimebase, getTrace, isActive, isScreenLocal, refreshCurrentValue, removeConnector, removeDataSource, removePropertyChangeListener, removeValueChangedListener, removeVetoableChangeListener, requestSyncWrite, setAutoSuspend, setClassLicenseManager, setContainer, setCustomTimer, setDataSourceName, setExportCriteria, setExposeComponentConnections, setName, setPullFromServers, setPushData, setPushName, setPushToServers, setScreenLocal, setServerListData, setTrace, tick

Methods inherited from class com.ergotech.vib.servers.DataSource
addVIBEventListener, checkScript, executeInScriptInternal, executeScript, executeScriptInternal, executeScriptInternal, getAutoSuspend, getBooleanValue, getBoolValue, getColorHi, getColorHiHi, getColorLo, getColorLoLo, getColorNormal, getConnectors, getConsoleLogger, getCurrentColor, getDataSourceName, getDoubleValue, getFloatValue, getGWTLogger, getIncomingValueObject, getInScript, getIntValue, getLongValue, getParent, getPopupLogger, getScript, getScriptEngine, getSendColors, getSources, getStringValue, getSyncWriteTimeout, getTimedPopupLogger, getTraceLogger, getValueHi, getValueHiHi, getValueLo, getValueLoLo, getValueObject, init, isHardSuspended, isRunning, isSendOnlyChangedValuesDefault, isSuspended, logException, logGWT, logGWT, logMessage, logTrace, n2sortConnectors, performScriptSubstitutions, popupMessage, post, removeConnector, removeVIBEventListener, replaceConnectors, scriptExtensionSubstition, setColorHi, setColorHiHi, setColorLo, setColorLoLo, setColorNormal, setConsoleLogger, setGWTLogger, setHardSuspended, setInScript, setParent, setPopupLogger, setScript, setSendColors, setSendOnlyChangedValuesDefault, setSyncWriteTimeout, setTimedPopupLogger, setTraceLogger, setValueHi, setValueHiHi, setValueLo, setValueLoLo, updateColor, updateListeners, updateListeners, updateListeners, whoAmI

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - BINARY_VALUE
```
public static final int BINARY_VALUE
```
    The value type BINARY
    
    See Also:
    
    Constant Field Values
  - BOOLEAN_VALUE
```
public static final int BOOLEAN_VALUE
```
    The value type BOOLEAN
    
    See Also:
    
    Constant Field Values
  - BOTHSWAP
```
public static final int BOTHSWAP
```
    Definition for point swap style.
    
    See Also:
    
    Constant Field Values
  - BYTESWAP
```
public static final int BYTESWAP
```
    Definition for point swap style.
    
    See Also:
    
    Constant Field Values
  - cvsRev
```
public static final java.lang.String cvsRev
```
    See Also:
    
    Constant Field Values
  - DOUBLE_WORD_VALUE
```
public static final int DOUBLE_WORD_VALUE
```
    The value type DOUBLE WORD
    
    See Also:
    
    Constant Field Values
  - FLOAT_VALUE
```
public static final int FLOAT_VALUE
```
    The value type FLOAT
    
    See Also:
    
    Constant Field Values
  - NOSWAP
```
public static final int NOSWAP
```
    Definition for point swap style.
    
    See Also:
    
    Constant Field Values
  - STRING_VALUE
```
public static final int STRING_VALUE
```
    The value type STRING
    
    See Also:
    
    Constant Field Values
  - WORD_VALUE
```
public static final int WORD_VALUE
```
    The value type WORD
    
    See Also:
    
    Constant Field Values
  - WORDSWAP
```
public static final int WORDSWAP
```
    Definition for point swap style.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - PLCServer
```
public PLCServer()
```
    Create the PLCServer.
- Method Detail
  - configure
```
public void configure()
```
    Sets the timebase of the server.
    
    Parameters:
    
    newValue - The new value.
    
    See Also:
    
    DataSource#setParameters
  - destroy
```
public void destroy()
             throws BadParameterException
```
    Stops the data source. This server will close any ports it has open. This implementation does nothing, it's just here as a place holder.
    
    Overrides:
    
    destroy in class SimpleDataSource
    
    Throws:
    
    BadParameterException
    
    See Also:
    
    #suspend
  - fromBCD
```
public int fromBCD(int bcdValue)
```
    Convert the incoming value from a BCD value. Oversize values will be silently truncated.
    
    Parameters:
    
    bcdValue - the incoming bcd encoded int.
    
    Returns:
    
    the value encoded as an int.
  - fromBCD
```
public long fromBCD(int bcdValue,
                    int length)
```
    Convert the incoming value from a BCD value. Oversize values will be silently truncated.
    
    Parameters:
    
    bcdValue - the incoming bcd encoded int.
    
    length - in bytes this must be either 1, 2, or 4
    
    Returns:
    
    the value encoded as an int.
  - getAddressType
```
public java.lang.String getAddressType()
```
    Return the address type. For example "0x", "1x", "3x", "4x", etc.
  - getBit
```
public int getBit()
```
    Returns the bit of the word of interest. For word addresses e.g. 3x, 4x etc. registers this allows decomposing the individual bits. For bit registers 0x, 1x, etc. this is used internally when blocking data.
    
    Returns:
    
    the register offset of the server.
  - getBitCount
```
public int getBitCount()
```
    Returns the number of bits required from the word of interest. For word addresses e.g. 3x, 4x etc. registers this allows decomposing the individual bits. For bit registers 0x, 1x, etc. this is used internally when blocking data.
    
    Returns:
    
    the register offset of the server.
  - getByteOffset
```
public abstract int getByteOffset()
```
    Returns the offset of the register of this server. The value is always returned in 8-bit bytes regardless of the length of the word.
    
    Returns:
    
    the register offset of the server.
  - getDefaultQualityForLocation
```
public int getDefaultQualityForLocation(int location)
                                 throws BadParameterException
```
    The default for all PLC server is to only accept good quality values.
    
    Overrides:
    
    getDefaultQualityForLocation in class SimpleManipulator
    
    Parameters:
    
    location - the method index.
    
    Throws:
    
    BadParameterException - never thrown.
  - getDeviceName
```
public java.lang.String getDeviceName()
```
    Gets the id of the server. This could be the hostname or some other string Returns the device number
  - getDeviceServer
```
public PLCDeviceServer getDeviceServer()
```
    Gets the device server. This is used for unit testing.
  - getDirty
```
public int getDirty()
```
    This method returns the value of the dirty flag.
  - getLength
```
public int getLength()
```
    Returns the number of bytes that need to be read to satisfy this server.
  - getOptimizeReads
```
public boolean getOptimizeReads()
```
    Optimize the reading of registers. If true then the system will attempt to block together the reads into the largest blocks possible. If false this value will always be read or written by itself.
  - getOutputBytes
```
public boolean getOutputBytes()
```
    String values will be output as byte[] if set to true
    
    Returns:
    
    true if outputBytes is true
  - getPLCAddressBlock
```
public PLCAddressBlock getPLCAddressBlock()
```
    Returns the address block for this server. This may be null. Modification of the address block will impact the PLC subsystem and so modifications are strongly discouraged. The only useful method of the returned address block is the refreshImage method which can be called to force a one-time read of all the servers using the address block. Note that if refreshImage is called, all servers associated with that address block and their listeners will be updated according to the normal rules (always send, deadbands, etc.) This is mandatory. If only certain servers were updated, there would be the possiblity of a known mismatch between the PLC and the servers.
  - getSigned
```
public boolean getSigned()
```
    Values will be signed if this is true.
    
    Returns:
    
    true if signed output
  - getStaticLocationFor
```
public int getStaticLocationFor(java.lang.String loc)
                         throws BadParameterException
```
    This is used by the StaticMethodEvent to determine which valueChanged method to call. An integer index is returned which is used by the valueChanged (int,ValueChangedEvent) method.
    
    Overrides:
    
    getStaticLocationFor in class Manipulator
    
    Throws:
    
    BadParameterException
  - getStationAddress
```
public int getStationAddress()
```
    The destination address for this server. This is the destination address of the PLC on the PPI network.
  - getSwapStyle
```
public int getSwapStyle()
```
    This returns the 32 bit swap style. There are four choices, no swap, word swap, byte swap or both word and byte swap.
  - inByteSwap
```
public static int inByteSwap(int value,
                             int swapFormat)
```
    This method will swap the bytes in the value according to the swap format.
    
    Parameters:
    
    value - the value to swap
    
    swapStyle - the swap style to use, the should be on of the defined types WORDSWAP, NOSWAP, BYTESWAP, BOTHSWAP
  - isBCD
```
public boolean isBCD()
```
    Returns:
    
    the bcd
  - isConfigured
```
public boolean isConfigured()
```
    Returns true if the configuration of this server is complete. This is called before attempting to add the server to an Address Block or a device.
    
    Returns:
    
    true if the server is fully configured, otherwise false.
  - isDirty
```
public boolean isDirty()
```
    This method returns true if the block has been marked as dirty.
  - isSimilar
```
public boolean isSimilar(PLCServer server)
```
    This will be called by the PLCAddressBlock to determine if the server is "similar" to this server. The implementation is free to decide exactly what this means. The default implementation checks that the required ports are the same, the that timebase is the same, that the address type is the same and that the station address is the same.
  - isTriggerOnThread
```
public boolean isTriggerOnThread()
```
    Returns:
    
    Returns the triggerOnThread.
  - outByteSwap
```
public static void outByteSwap(int value,
                               int swapFormat,
                               byte[] buf,
                               int offset)
```
    This method will swap the bytes in the value according to the swap format.
    
    Parameters:
    
    value - the value to swap
    
    swapStyle - the swap style to use, the should be on of the defined types WORDSWAP, NOSWAP, BYTESWAP, BOTHSWAP
    
    buf - the bytes are swapped into the buffer which is assumed to have enough space to hold them
    
    offset - the starting offset in the buffer
  - propertyChange
```
public void propertyChange(java.beans.PropertyChangeEvent evt)
```
    This will be called whenever the name of the device server that we are attached to changes.
    
    Specified by:
    
    propertyChange in interface java.beans.PropertyChangeListener
    
    See Also:
    
    PropertyChangeListener.propertyChange(java.beans.PropertyChangeEvent)
  - setAddressType
```
public void setAddressType(java.lang.String addressType)
```
    Sets the address type. For example "0x", "1x", "3x", "4x", etc.
  - setBCD
```
public void setBCD(boolean bcd)
```
    Parameters:
    
    bcd - set to true to cause BCD conversions on reading and writing.
  - setBit
```
public void setBit(int b)
```
    The bit to read if this word is being decomposed into bits.
  - setBitCount
```
public void setBitCount(int bc)
```
    Set the bit count.
  - setDeviceName
```
public void setDeviceName(java.lang.String deviceName)
```
    Sets the name of the device server
    
    Parameters:
    
    deviceName - the name of the device
  - setDirty
```
public void setDirty(boolean flag)
```
    Dirty tracking. This is not (currently) used be all the PLC implementations. The flag is an integer and is incremented by each call to "setDirty(true)", it is reset to zero by a call to "setDirty(false)". This allows logic that can quickly determine how many times the server has been set dirty.
  - setLength
```
public void setLength(int length)
```
    Returns the number of bytes that need to be read to satisfy this server.
  - setOptimizeReads
```
public void setOptimizeReads(boolean optimize)
```
    Optimize the reading of registers. If true then the system will attempt to block together the reads into the largest blocks possible. If false this value will always be read or written by itself.
  - setOutputBytes
```
public void setOutputBytes(boolean outputBytes)
```
    String values will be output as byte[] if this is true. Default is false. Used in ModbusServer for Strings.
    
    Parameters:
    
    outputBytes - set to true to output String value as byte[]
  - setSigned
```
public void setSigned(boolean signed)
```
    Values will be signed if this is true.
    
    Parameters:
    
    signed - set to true for signed output
  - setStationAddress
```
public void setStationAddress(int stationAddress)
```
    The destination address for this server. This is the destination address of the PLC on the PPI network.
  - setSwapStyle
```
public void setSwapStyle(int swapStyle)
```
    This sets the 32 bit swap style. There are four choices, no swap, word swap, byte swap or both word and byte swap.
  - setTimebase
```
public void setTimebase(double newValue)
```
    Sets the timebase of the server.
    
    Overrides:
    
    setTimebase in class SimpleDataSource
    
    Parameters:
    
    newValue - The new value.
    
    See Also:
    
    DataSource#setParameters
  - setTriggerOnThread
```
public void setTriggerOnThread(boolean triggerOnThread)
```
    Parameters:
    
    triggerOnThread - The triggerOnThread to set.
  - setValueFrom
```
public abstract void setValueFrom(byte[] image,
                                  int offset,
                                  int quality)
                           throws java.lang.ArrayIndexOutOfBoundsException
```
    Update the value of the server from an address block
    
    Throws:
    
    java.lang.ArrayIndexOutOfBoundsException
  - setValueObject
```
public void setValueObject(ValueObjectInterface value)
                    throws VIBUpdateFailedException
```
    This method is called by beans and other data sources to set the value of this server. This will be called by valueChanged after the user has been authenticated (if necessary)
    
    Overrides:
    
    setValueObject in class SimpleDataSource
    
    Parameters:
    
    value - the new ValueObject value for the server
    
    Throws:
    
    VIBUpdateFailedException
    
    See Also:
    
    setValueObject(com.ergotech.vib.valueobjects.ValueObjectInterface)
  - shouldBeAdded
```
public boolean shouldBeAdded()
```
    Returns true if the server needs to be added to an address block. This is usually all the read servers, and maybe the write servers except for modules, like the ethernet I/O (ENT) where the result of a read is not the same as was written.
  - start
```
public void start()
           throws BadParameterException,
                  VIBUpdateFailedException
```
    This will attach the server to its device server.
    
    Overrides:
    
    start in class SimpleDataSource
    
    Throws:
    
    BadParameterException
    
    VIBUpdateFailedException
    
    See Also:
    
    DataSource.start()
  - stop
```
public void stop()
          throws BadParameterException
```
    Disconnects the server from the device server and then stops the server.
    
    Overrides:
    
    stop in class SimpleDataSource
    
    Throws:
    
    BadParameterException
    
    See Also:
    
    SimpleDataSource.stop()
  - toBCD
```
public int toBCD(int intValue)
```
    Convert the incoming value to a BCD value. Oversize values will be silently truncated. 10 00 00 00
    
    Parameters:
    
    intValue - the incoming ieee encoded int.
    
    Returns:
    
    the bcd value encoded as an int.
  - toBCD
```
public int toBCD(long intValue,
                 int length)
```
    Convert the incoming value to a BCD value. Oversize values will be silently truncated. 10 00 00 00
    
    Parameters:
    
    intValue - the incoming ieee encoded int.
    
    length - in bytes this must be either 1, 2, or 4
    
    Returns:
    
    the bcd value encoded as an int.
  - toString
```
public java.lang.String toString()
```
    returns a string representation of this server.
    
    Overrides:
    
    toString in class Manipulator
    
    Returns:
    
    a string description of this server
  - triggerRead
```
public PLCDataBlock triggerRead()
                         throws VIBUpdateFailedException
```
    This method will trigger a read of the server and will update the listeners. The return is the raw data returned from the PLC. The return may be null. If the bean is suspended, this method will unsuspend the bean for the duration of this read.
    
    Returns:
    
    the raw data from the PLC.
    
    Throws:
    
    VIBUpdateFailedException
  - triggerValueChanged
```
public void triggerValueChanged(ValueChangedEvent event)
                         throws VIBUpdateFailedException
```
    This allows a server without a timebase to be triggered for a read
    
    Throws:
    
    VIBUpdateFailedException
  - validateResponse
```
public abstract PLCDataBlock validateResponse(PLCDataBlock msgOut,
                                              PLCDataBlock msgIn)
                                       throws PLCException
```
    Returns true if the response to a write message is correct.
    
    Throws:
    
    PLCException
  - valueChanged
```
public void valueChanged(int loc,
                         ValueChangedEvent e)
                  throws VIBUpdateFailedException,
                         BadParameterException
```
    This calls the proper valueChanged method based on the return from the getStaticLocationFor method.
    
    Overrides:
    
    valueChanged in class Manipulator
    
    Throws:
    
    VIBUpdateFailedException
    
    BadParameterException
  - VIBEvent
```
public void VIBEvent(VIBEvent vibEvent)
              throws BadParameterException
```
    We are interested in few events. These are used so we can reregister for a server.
    
    Overrides:
    
    VIBEvent in class SimpleDataSource
    
    Throws:
    
    BadParameterException

Class PLCServer

Nested Class Summary

Nested classes/interfaces inherited from class com.ergotech.vib.servers.SimpleDataSource

Nested classes/interfaces inherited from class com.ergotech.vib.servers.DataSource

Field Summary

Fields inherited from class com.ergotech.vib.manipulators.Manipulator

Fields inherited from class com.ergotech.vib.servers.SimpleDataSource

Fields inherited from class com.ergotech.vib.servers.DataSource

Constructor Summary

Method Summary

Methods inherited from class com.ergotech.vib.manipulators.Manipulator

Methods inherited from class com.ergotech.vib.servers.SimpleDataSource

Methods inherited from class com.ergotech.vib.servers.DataSource

Methods inherited from class java.lang.Object

Field Detail

BINARY_VALUE

BOOLEAN_VALUE

BOTHSWAP

BYTESWAP

cvsRev

DOUBLE_WORD_VALUE

FLOAT_VALUE

NOSWAP

STRING_VALUE

WORD_VALUE

WORDSWAP

Constructor Detail

PLCServer

Method Detail

configure

destroy

fromBCD

fromBCD

getAddressType

getBit

getBitCount

getByteOffset

getDefaultQualityForLocation

getDeviceName

getDeviceServer

getDirty

getLength

getOptimizeReads

getOutputBytes

getPLCAddressBlock

getSigned

getStaticLocationFor

getStationAddress

getSwapStyle

inByteSwap

isBCD

isConfigured

isDirty

isSimilar

isTriggerOnThread

outByteSwap

propertyChange

setAddressType

setBCD

setBit

setBitCount

setDeviceName

setDirty

setLength

setOptimizeReads

setOutputBytes

setSigned

setStationAddress

setSwapStyle

setTimebase

setTriggerOnThread

setValueFrom

setValueObject

shouldBeAdded

start

stop

toBCD

toBCD

toString

triggerRead