package com.intelligt.modbus.jlibmodbus.exception;
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import com.intelligt.modbus.jlibmodbus.utils.ModbusExceptionCode;
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/*
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* Copyright (C) 2016 "Invertor" Factory", JSC
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* [http://www.sbp-invertor.ru]
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*
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* This file is part of JLibModbus.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Authors: Vladislav Y. Kochedykov, software engineer.
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* email: vladislav.kochedykov@gmail.com
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*/
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/**
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* quote from MODBUS Application Protocol Specification V1.1b
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* <p>
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* "The data address received in the query is not an
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* allowable address for the server (or slave). More
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* specifically, the combination of reference number
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* and transfer length is invalid. For a controller with
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* 100 registers, the PDU addresses the first
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* register as 0, and the last one as 99. If a request
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* is submitted with a starting register address of 96
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* and a quantity of registers of 4, then this request
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* will successfully operate (address-wise at least)
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* on registers 96, 97, 98, 99. If a request is
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* submitted with a starting register address of 96
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* and a quantity of registers of 5, then this request
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* will fail with Exception Code 0x02 “Illegal Data
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* Address” since it attempts to operate on registers
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* 96, 97, 98, 99 and 100, and there is no register
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* with address 100."
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*/
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public class IllegalDataAddressException extends ModbusProtocolException {
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final private int dataAddress;
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public IllegalDataAddressException(int dataAddress) {
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super(ModbusExceptionCode.ILLEGAL_DATA_ADDRESS);
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this.dataAddress = dataAddress;
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}
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public int getDataAddress() {
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return dataAddress;
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}
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}
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