net.solarnetwork.io.modbus

Class ModbusErrorCodes

java.lang.Object

net.solarnetwork.io.modbus.ModbusErrorCodes

public final class ModbusErrorCodes
extends Object

Modbus error codes utilities and constants.

Field Summary

Fields

Modifier and Type	Field	Description
static byte	ACKNOWLEDGE	Server has accepted request and is processing it, but a long duration of time is required.
static byte	GATEWAY_PATH_UNAVAILABLE	Specialized for Modbus gateways.
static byte	GATEWAY_TIMEOUT	Specialized for Modbus gateways.
static byte	ILLEGAL_DATA_ADDRESS	Data address of some or all the required entities are not allowed or do not exist in server.
static byte	ILLEGAL_DATA_VALUE	Value is not accepted by server.
static byte	ILLEGAL_FUNCTION	Function code received in the query is not recognized or allowed by server.
static byte	MEMORY_PARITY_ERROR	Server detected a parity error in memory.
static byte	NEGATIVE_ACKNOWLEDGE	Server cannot perform the programming functions.
static byte	SERVER_DEVICE_BUSY	Server is engaged in processing a long-duration command.
static byte	SERVER_DEVICE_FAILURE	Unrecoverable error occurred while server was attempting to perform requested action.

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

ILLEGAL_FUNCTION

public static final byte ILLEGAL_FUNCTION

Function code received in the query is not recognized or allowed by server.

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Constant Field Values

ILLEGAL_DATA_ADDRESS

public static final byte ILLEGAL_DATA_ADDRESS

Data address of some or all the required entities are not allowed or do not exist in server.

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Constant Field Values

ILLEGAL_DATA_VALUE

public static final byte ILLEGAL_DATA_VALUE

Value is not accepted by server.

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Constant Field Values

SERVER_DEVICE_FAILURE

public static final byte SERVER_DEVICE_FAILURE

Unrecoverable error occurred while server was attempting to perform requested action.

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Constant Field Values

ACKNOWLEDGE

public static final byte ACKNOWLEDGE

Server has accepted request and is processing it, but a long duration of time is required. This response is returned to prevent a timeout error from occurring in the client. Client can next issue a Poll Program Complete message to determine whether processing is completed.

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Constant Field Values

SERVER_DEVICE_BUSY

public static final byte SERVER_DEVICE_BUSY

Server is engaged in processing a long-duration command. client should retry later.

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Constant Field Values

NEGATIVE_ACKNOWLEDGE

public static final byte NEGATIVE_ACKNOWLEDGE

Server cannot perform the programming functions. Client should request diagnostic or error information from server.

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Constant Field Values

MEMORY_PARITY_ERROR

public static final byte MEMORY_PARITY_ERROR

Server detected a parity error in memory. Client can retry the request, but service may be required on the server device.

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Constant Field Values

GATEWAY_PATH_UNAVAILABLE

public static final byte GATEWAY_PATH_UNAVAILABLE

Specialized for Modbus gateways. Indicates a misconfigured gateway.

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Constant Field Values

GATEWAY_TIMEOUT

public static final byte GATEWAY_TIMEOUT

Specialized for Modbus gateways. Sent when server fails to respond.

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Constant Field Values