java.lang.Object
- jmri.jmrix.AbstractMessage
- - jmri.jmrix.AbstractMRReply
  - - jmri.jmrix.roco.z21.Z21Reply

All Implemented Interfaces:

Message
```
public class Z21Reply
extends AbstractMRReply
```
Class for replies in the z21/Z21 protocol.
Replies are of the format: 2 bytes length 2 bytes opcode n bytes data
numeric data is sent in little endian format.

Field Summary
- Fields inherited from class jmri.jmrix.AbstractMRReply
  DEFAULTMAXSIZE
- Fields inherited from class jmri.jmrix.AbstractMessage
  _dataChars, _nDataChars

Constructor Summary

Constructors
Constructor Description

Z21Reply()
Create a new one.

Z21Reply(byte[] a, int l)
This ctor interprets the byte array as a sequence of characters to send.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`canDetectorMessageType()`
`java.lang.Integer`	`getElementBCD(int n)`	Get an integer representation of a BCD value.
`int`	`getLength()`
`LocoNetMessage`	`getLocoNetMessage()`
`int`	`getNumRailComDataEntries()`
`int`	`getOpCode()`	Get the OpCode.
`int`	`getRailComErrCount(int n)`	Get the error counter from an entry in a railcom message.
`DccLocoAddress`	`getRailComLocoAddress(int n)`	Get a locomotive address from an entry in a railcom message.
`int`	`getRailComOptions(int n)`	Get the options value from an entry in a railcom message.
`int`	`getRailComQos(int n)`	Get the Quality of Service value from an entry in a railcom message.
`int`	`getRailComRcvCount(int n)`	Get the receive counter from an entry in a railcom message.
`int`	`getRailComSpeed(int n)`	Get the speed value from an entry in a railcom message.
`int`	`getSystemDataFilteredMainCurrent()`	Get the Filtered Main Track Current from the SystemStateDataChanged message.
`int`	`getSystemDataMainCurrent()`	Get the Main Track Current from the SystemStateDataChanged message.
`int`	`getSystemDataProgCurrent()`	Get the Programming Track Current from the SystemStateDataChanged message.
`int`	`getSystemDataSupplyVoltage()`	Get the Supply Voltage from the SystemStateDataChanged message.
`int`	`getSystemDataTemperature()`	Get the Temperature from the SystemStateDataChanged message.
`int`	`getSystemDataVCCVoltage()`	Get the VCC (and track) Voltage from the SystemStateDataChanged message.
`Z21XNetReply`	`getXNetReply()`
`(package private) boolean`	`isCanDetectorMessage()`
`boolean`	`isCanReporterMessage()`
`boolean`	`isCanSensorMessage()`
`(package private) boolean`	`isLocoNetDetectorMessage()`
`(package private) boolean`	`isLocoNetDispatchMessage()`
`(package private) boolean`	`isLocoNetTunnelMessage()`
`(package private) boolean`	`isRailComDataChangedMessage()`
`(package private) boolean`	`isRMBusDataChangedReply()`
`(package private) boolean`	`isSystemDataChangedReply()`
`(package private) boolean`	`isXPressNetTunnelMessage()`
`void`	`setElement(int n, int v)`	Set a single Data Element at a particular index.
`void`	`setLength(int i)`
`void`	`setOpCode(int i)`	Set the OpCode.
`protected int`	`skipPrefix(int index)`
`java.lang.String`	`toMonitorString()`

Methods inherited from class jmri.jmrix.AbstractMRReply
flush, isBinary, isRetransmittableErrorMsg, isUnsolicited, match, maxSize, pollValue, setBinary, setUnsolicited, skipWhiteSpace, toString, value

Methods inherited from class jmri.jmrix.AbstractMessage
equals, getElement, getNumDataElements, hashCode

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Z21Reply
```
public Z21Reply()
```
    Create a new one.
  - Z21Reply
```
public Z21Reply(byte[] a,
                int l)
```
    This ctor interprets the byte array as a sequence of characters to send.
    
    Parameters:
    
    a - Array of bytes to send.
    
    l - length of reply.
- Method Detail
  - setElement
```
public void setElement(int n,
                       int v)
```
    Description copied from class: AbstractMessage
    
    Set a single Data Element at a particular index.
    
    Specified by:
    
    setElement in interface Message
    
    Overrides:
    
    setElement in class AbstractMRReply
    
    Parameters:
    
    n - index of element.
    
    v - value of element.
  - getElementBCD
```
public java.lang.Integer getElementBCD(int n)
```
    Get an integer representation of a BCD value.
    
    Parameters:
    
    n - byte in message to convert
    
    Returns:
    
    Integer value of BCD byte.
  - setOpCode
```
public void setOpCode(int i)
```
    Description copied from class: AbstractMRReply
    
    Set the OpCode. Sets Element 0 to character value of integer.
    
    Overrides:
    
    setOpCode in class AbstractMRReply
    
    Parameters:
    
    i - Opcode value.
  - getOpCode
```
public int getOpCode()
```
    Description copied from class: AbstractMRReply
    
    Get the OpCode.
    
    Overrides:
    
    getOpCode in class AbstractMRReply
    
    Returns:
    
    value of Element 0.
  - setLength
```
public void setLength(int i)
```
  - getLength
```
public int getLength()
```
  - skipPrefix
```
protected int skipPrefix(int index)
```
    Specified by:
    
    skipPrefix in class AbstractMRReply
  - toMonitorString
```
public java.lang.String toMonitorString()
```
    Returns:
    
    a human-readable representation of the message.
  - isXPressNetTunnelMessage
```
boolean isXPressNetTunnelMessage()
```
  - getXNetReply
```
public Z21XNetReply getXNetReply()
```
  - isRailComDataChangedMessage
```
boolean isRailComDataChangedMessage()
```
  - getNumRailComDataEntries
```
public int getNumRailComDataEntries()
```
    Returns:
    
    the number of RailCom entries in this message. the returned value is in the 0 to 19 range.
  - getRailComLocoAddress
```
public DccLocoAddress getRailComLocoAddress(int n)
```
    Get a locomotive address from an entry in a railcom message.
    
    Parameters:
    
    n - the entry to get the address from.
    
    Returns:
    
    the locomotive address for the specified entry.
  - getRailComRcvCount
```
public int getRailComRcvCount(int n)
```
    Get the receive counter from an entry in a railcom message.
    
    Parameters:
    
    n - the entry to get the address from.
    
    Returns:
    
    the receive counter for the specified entry.
  - getRailComErrCount
```
public int getRailComErrCount(int n)
```
    Get the error counter from an entry in a railcom message.
    
    Parameters:
    
    n - the entry to get the address from.
    
    Returns:
    
    the error counter for the specified entry.
  - getRailComSpeed
```
public int getRailComSpeed(int n)
```
    Get the speed value from an entry in a railcom message.
    
    Parameters:
    
    n - the entry to get the address from.
    
    Returns:
    
    the error counter for the specified entry.
  - getRailComOptions
```
public int getRailComOptions(int n)
```
    Get the options value from an entry in a railcom message.
    
    Parameters:
    
    n - the entry to get the address from.
    
    Returns:
    
    the options for the specified entry.
  - getRailComQos
```
public int getRailComQos(int n)
```
    Get the Quality of Service value from an entry in a railcom message.
    
    Parameters:
    
    n - the entry to get the address from.
    
    Returns:
    
    the Quality of Service value for the specified entry.
  - isSystemDataChangedReply
```
boolean isSystemDataChangedReply()
```
  - getSystemDataMainCurrent
```
public int getSystemDataMainCurrent()
```
    Get the Main Track Current from the SystemStateDataChanged message.
    
    Returns:
    
    the current in mA.
  - getSystemDataProgCurrent
```
public int getSystemDataProgCurrent()
```
    Get the Programming Track Current from the SystemStateDataChanged message.
    
    Returns:
    
    the current in mA.
  - getSystemDataFilteredMainCurrent
```
public int getSystemDataFilteredMainCurrent()
```
    Get the Filtered Main Track Current from the SystemStateDataChanged message.
    
    Returns:
    
    the current in mA.
  - getSystemDataTemperature
```
public int getSystemDataTemperature()
```
    Get the Temperature from the SystemStateDataChanged message.
    
    Returns:
    
    the current in degrees C.
  - getSystemDataSupplyVoltage
```
public int getSystemDataSupplyVoltage()
```
    Get the Supply Voltage from the SystemStateDataChanged message.
    
    Returns:
    
    the current in mV.
  - getSystemDataVCCVoltage
```
public int getSystemDataVCCVoltage()
```
    Get the VCC (and track) Voltage from the SystemStateDataChanged message.
    
    Returns:
    
    the current in mV.
  - isLocoNetTunnelMessage
```
boolean isLocoNetTunnelMessage()
```
  - isLocoNetDispatchMessage
```
boolean isLocoNetDispatchMessage()
```
  - isLocoNetDetectorMessage
```
boolean isLocoNetDetectorMessage()
```
  - getLocoNetMessage
```
public LocoNetMessage getLocoNetMessage()
```
  - isRMBusDataChangedReply
```
boolean isRMBusDataChangedReply()
```
  - isCanDetectorMessage
```
boolean isCanDetectorMessage()
```
  - canDetectorMessageType
```
public int canDetectorMessageType()
```
    Returns:
    
    the can Detector Message type or -1 if not a can detector message.
  - isCanSensorMessage
```
public boolean isCanSensorMessage()
```
    Returns:
    
    true if the reply is for a CAN detector and the type is 0x01
  - isCanReporterMessage
```
public boolean isCanReporterMessage()
```
    Returns:
    
    true if the reply is for a CAN detector and the type is 0x01

Constructor	Description
`Z21Reply()`	Create a new one.
`Z21Reply(byte[] a, int l)`	This ctor interprets the byte array as a sequence of characters to send.

Class Z21Reply

Field Summary

Fields inherited from class jmri.jmrix.AbstractMRReply

Fields inherited from class jmri.jmrix.AbstractMessage

Constructor Summary

Method Summary

Methods inherited from class jmri.jmrix.AbstractMRReply

Methods inherited from class jmri.jmrix.AbstractMessage

Methods inherited from class java.lang.Object

Constructor Detail

Z21Reply

Z21Reply

Method Detail

setElement

getElementBCD

setOpCode

getOpCode

setLength

getLength

skipPrefix

toMonitorString

isXPressNetTunnelMessage

getXNetReply

isRailComDataChangedMessage

getNumRailComDataEntries

getRailComLocoAddress

getRailComRcvCount

getRailComErrCount

getRailComSpeed

getRailComOptions

getRailComQos

isSystemDataChangedReply

getSystemDataMainCurrent

getSystemDataProgCurrent

getSystemDataFilteredMainCurrent

getSystemDataTemperature

getSystemDataSupplyVoltage

getSystemDataVCCVoltage

isLocoNetTunnelMessage

isLocoNetDispatchMessage

isLocoNetDetectorMessage

getLocoNetMessage

isRMBusDataChangedReply

isCanDetectorMessage

canDetectorMessageType

isCanSensorMessage

isCanReporterMessage