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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
307
libs/pvb/include/rllib/rldf1.h
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307
libs/pvb/include/rllib/rldf1.h
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/***************************************************************************
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rldf1.cpp - description
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-------------------
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This Class implements basic functions of DF1 Full Duplex protocall as
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described in 1770-6.5.16 Publication of AB.
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This Class implements:
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- Data Link Layer ( Message Frames )
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- Application Layer ( Message Packets )
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- Some Basic Communication Commands for reading and writting PLC files.
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It is easy to add more Communication Commands.
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Some basic knowledge about the related PLCs is required.
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The class supports only serial communication through RS232 port.
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DANGER: DON'T connect to a PLC unless you are certain it is safe to do so!!!
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You are ABSOLUTELY RESPONSIBLE if you affect the operation of a running PLC.
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Evangelos Arkalis
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mail:arkalis.e@gmail.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This library is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE as *
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* published by the Free Software Foundation *
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* *
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***************************************************************************/
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#ifndef _RL_DF1_H_
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#define _RL_DF1_H_
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#include "rlserial.h"
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class df1Buffer;
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class rlDF1
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{
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public:
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/*! <pre>
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Initialize class
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src = id of local device
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timeout = receive timeout in ms
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</pre> */
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rlDF1(unsigned char src=0, int timeout=1000);
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virtual ~rlDF1();
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void registerSerial(rlSerial *serial);
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enum DF1ret {
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retERROR_TNS = -6,
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retERROR_STS = -5,
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retERROR_CRC = -4,
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retERROR_NAC = -3,
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retERROR = -2,
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retNORESPONSE = -1,
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retSUCCESS = 0
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};
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/*! <pre>
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Command: Set CPU mode ( See page 7-26 )
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destination = destination ID
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mode = CPUMODE value
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</pre> */
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enum CPUMODE {
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PROGRAM = 0,
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TEST,
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RUN,
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NOCHANGE
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};
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int cmdSetCPUMode(unsigned char destination, unsigned char mode);
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/*! <pre>
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Command: Diagnostic Status
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Reads a block of status information from an interface module.
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The function returns the status information in data.
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(see Chapter 10, “Diagnostic Status Information.”)
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destination = destination ID
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data = buffer for data return
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returns the number of valid bytes in data or Error Code
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</pre> */
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int cmdDiagnosticStatus( unsigned char destination, unsigned char *data);
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/*! <pre>
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Command: protected typed logical read with three address fields
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*Most Important command*. Reads data from a logical address.
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Parameters:
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destination = destination ID
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nsize = size of data to be read
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filetype = Type of file with number filenum
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84 hex: status
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85 hex: bit
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86 hex: timer
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87 hex: counter
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88 hex: control
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89 hex: integer
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8A hex: floating point
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8B hex: output logical by slot
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8C hex: input logical by slot
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8D hex: string
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8E hex: ASCII
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8F hex: BCD
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filenum = filenumber in PLC memory
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adr = Elements Address (see Manual)
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sadr = Subelements Address (see Manual)
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data = buffer for data return
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returns the number of valid bytes in data or Error Code
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</pre> */
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int cmdLogicalRead( unsigned char destination, unsigned char nsize, unsigned char filetype, unsigned char filenum, unsigned char adr, unsigned char sadr, unsigned char *buffer);
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/*! <pre>
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Command: protected typed logical write with three address fields
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*Most Important command*. Writes data to a logical address.
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Parameters:
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destination = destination ID
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nsize = size of data to write
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filetype = Type of file with number filenum
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84 hex: status
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85 hex: bit
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86 hex: timer
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87 hex: counter
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88 hex: control
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89 hex: integer
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8A hex: floating point
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8B hex: output logical by slot
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8C hex: input logical by slot
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8D hex: string
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8E hex: ASCII
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8F hex: BCD
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filenum = filenumber in PLC memory
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adr = Elements Address (see Manual)
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sadr = Subelements Address (see Manual)
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data = buffer of data to write
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returns Error Code
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</pre> */
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int cmdLogicalWrite( unsigned char destination, unsigned char nsize, unsigned char filetype, unsigned char filenum, unsigned char adr, unsigned char sadr, unsigned char *buffer);
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private:
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/*! <pre>
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Functions for Application Layer.
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Normally private. If you want to add new Commands do it with new public functions.
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sendCommand implements sending with retries and handling
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destination = id of remote device
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cmd = Command Code (see page 6-3)
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sts = Status Code (see page 6-6 )
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cdata = Pointer to Command Specific data packet ( Chapter 7 )
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len = Length of cdata
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receiveAnswer gets answer frame from remote.
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</pre> */
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int sendCommand( unsigned char destination, unsigned char cmd, unsigned char sts, unsigned char *cdata, unsigned char len);
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int receiveAnswer( unsigned char &destination, unsigned char &cmd, unsigned char &sts, unsigned char *cdata, unsigned char &len);
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/*! <pre>
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Functions for Data Link Layer.
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Internal Use ONLY.
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</pre> */
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enum DF1BytePos {
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POS_DST =0,
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POS_SRC =1,
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POS_CMD =2,
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POS_STS =3,
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POS_TNSL =4,
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POS_TNSH =5,
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POS_DATA =6
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};
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enum DF1ControlChars { /// Page 2-6 of Ref Manual
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SOH = 0x01,
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STX = 0x02,
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ETX = 0x03,
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EOT = 0x04,
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ENQ = 0x05,
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ACK = 0x06,
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DLE = 0x10,
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NAC = 0x15
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};
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enum DF1Flags {
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FLAG_TIMEOUT =-1,
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FLAG_DATA =0,
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FLAG_CONTROL =1
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};
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int writeBuffer( unsigned char *buffer, int len );
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int writeBuffer( df1Buffer& buffer );
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int getSymbol(unsigned char *c);
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int get(unsigned char *c);
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int sendENQ();
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int sendACK();
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int sendNAC();
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rlSerial *tty;
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bool active;
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unsigned short tns;
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int nRequests;
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int nResponses;
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unsigned char source;
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int timeout;
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public:
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/*! <pre>
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Some statistics...
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</pre> */
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int requests() {return nRequests;};
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int responses() {return nResponses;};
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void clearStats() { nRequests=0; nResponses=0;};
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};
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#endif // _RL_DF1_H_
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/*
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// test program for rlDF1
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#include <rldf1.h>
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// Remote ID
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const unsigned char id=1;
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rlSerial ser;
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rlDF1 myplc;
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int main(int argc, char *argv[])
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{
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int ret;
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if ( ser.openDevice( "/dev/ttyS0", B19200, 0, 0 )!= 0 ) exit(-1);
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printf("\nDevice OK");
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myplc.registerSerial( &ser ); /// Register Serial Port
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printf("\n1.TEST CONNECTIVITY");
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ret = myplc.cmdSetCPUMode( id, rlDF1::NOCHANGE ); /// For Connectivity Test
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if (ret<0) {
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printf("\nDevice Error %d\n",ret);
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exit(-1);
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}
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rlsleep(3000);
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printf("\n2.SET PLC IN PROGRAM MODE");
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ret = myplc.cmdSetCPUMode( id, rlDF1::PROGRAM ); /// PROGRAM MODE
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if (ret<0) {
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printf("\nDevice Error %d\n",ret);
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exit(-1);
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}
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rlsleep(3000);
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printf("\n3.SET PLC IN RUN MODE");
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ret = myplc.cmdSetCPUMode( id, rlDF1::RUN ); /// RUN MODE
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if (ret<0) {
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printf("\nDevice Error %d\n",ret);
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exit(-1);
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}
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rlsleep(3000);
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printf("\n4.GET PLC STATUS BYTES (Read Manual for details)");
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unsigned char rbytes[256];
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ret = myplc.cmdDiagnosticStatus( id, rbytes );
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if (ret<0) {
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printf("\nDevice Error %d\n",ret);
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exit(-1);
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}
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for(int i=0;i<ret;i++) printf("\n%d -> \t%d \t%02X", i, rbytes[i], rbytes[i]);
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printf("\n");
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rlsleep(3000);
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printf("\n5.LOGICAL READ - Read 2 bytes from Inputs - I1:0");
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ret = myplc.cmdLogicalRead( id, 2, 0x8C, 1, 0, 0, rbytes ); /// 0x8C:Read Inputs by Slot: 2 bytes from Data File I1, starting at Address 0 [ I1:0 ]
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if (ret<0) {
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printf("\nDevice Error %d\n",ret);
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exit(-1);
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}
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for(int i=0;i<ret;i++) printf("\n%d -> \t%d \t%02X", i, rbytes[i], rbytes[i]);
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printf("\n");
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rlsleep(3000);
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printf("\n6.LOGICAL WRITE - Write 2 bytes to Outputs - Q0:0 > CYCLE FROM 0.0 to 0.7, RESET 0.8-0.15\n");
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for(int i=0;i<8;i++) {
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printf("SET Q0:0.%d",i);
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rbytes[0]=0x01<<i;
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rbytes[1]=0;
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ret = myplc.cmdLogicalWrite( id, 2, 0x8B, 0, 0, 0, rbytes ); /// 0x8B:Write Outputs by Slot: 2 bytes to Data File Q0, starting at Address 0 [ Q0:0 ]
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if (ret<0) {
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printf("\nDevice Error %d\n",ret);
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exit(-1);
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}
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printf("\n");
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rlsleep(1000);
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}
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printf("\n7.LOGICAL WRITE - Write 2 bytes to Outputs - Q0:0 > RESET 0.0-0.15");
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rbytes[0]=0; /// Reset Outputs 0-15
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rbytes[1]=0;
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ret = myplc.cmdLogicalWrite( id, 2, 0x8B, 0, 0, 0, rbytes ); /// 0x8B:Write Outputs by Slot: 2 bytes to Data File Q0, starting at Address 0 [ Q0:0 ]
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if (ret<0) {
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printf("\nDevice Error %d\n",ret);
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exit(-1);
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}
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printf("\nDuring execution of this program, we had %d Requests and %d Responses to/from PLC\n", myplc.requests(), myplc.responses());
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ser.closeDevice();
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}
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*/
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