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搭建PVB架构，实现前端的基础布局、菜单、表格、图示等功能

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lixiaoyuan
2025-08-20 19:00:22 +08:00
parent 5de7687bcc
commit 7e965b6fb4
142 changed files with 28270 additions and 411 deletions
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44
libs/pvb/include/rllib/rlmodbusclient.h Normal file
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/***************************************************************************
rlmodbusclient.h - description
-------------------
begin : Wed Jan 07 2004
copyright : (C) 2004 by R. Lehrig
email : lehrig@t-online.de
***************************************************************************/
/***************************************************************************
* *
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE as *
* published by the Free Software Foundation *
* *
***************************************************************************/
#ifndef _RL_MODBUS_CLIENT_H_
#define _RL_MODBUS_CLIENT_H_
#include "rldefine.h"
#include "rlmodbus.h"
#include "rlmailbox.h"
#include "rlsharedmemory.h"
/*! <pre>
This class is for data aqusition over a modbus daemon as created by pvdevelop.
It communicates over a shared memory and a mailbox according to the pvbrowser principle.
</pre> */
class rlModbusClient : public rlMailbox, public rlSharedMemory
{
public:
rlModbusClient(const char *mbxname, const char *shmname, int shmsize);
virtual ~rlModbusClient();
int write(int slave, int function, const unsigned char *data, int len);
int writeSingleCoil(int slave, int adr, int value);
int writeMultipleCoils(int slave, int adr, const unsigned char *values, int num_coils);
int writePresetSingleRegister(int slave, int adr, int value);
int writePresetMultipleRegisters(int slave, int adr, const int *values, int num_values);
int readBit(int offset, int number);
int readByte(int offset, int number);
int readShort(int offset, int number);
};
#endif