三菱FX系列PLC编程口通信协议
该协议实际上适用于PLC编程端口以及 FX-232AW 模块的通信。感谢网友visualboy提供。
通讯格式:
命令 命令码 目标设备
DEVICE READ CMD "0" X,Y,M,S,T,C,D
DEVICE WRITE CMD "1" X,Y,M,S,T,C,D
FORCE ON CMD " 7" X,Y,M,S,T,C
FORCE OFF CMD "8" X,Y,M,S,T,C
传输格式: RS232C
波特率: 9600bps
奇偶: even
校验: 累加方式(和校验)
字符: ASCII
16进制代码:
ENQ 05H 请求
ACK 06H PLC正确响应
NAK 15H PLC错误响应
STX 02H 报文开始
ETX 03H 报文结束
帧格式:
STX CMD DATA ...... DATA ETX SUM(upper) SUM(lower)
例子:
STX ,CMD ,ADDRESS, BYTES, ETX, SUM
02H, 30H, 31H,30H,46H,36H, 30H,34H, 03H, 37H,34H
SUM=CMD+......+ETX;
30h+31h+30h+46h+36h+30h+34h+03h=74h;
累加和超过两位取低两位
三菱FX系列PLC编程口通信协议举例
三菱FX系列PLC编程口通信协议举例
1、DEVICE READ(读出软设备状态值)
计算机向PLC发送:
始 命令 首地址 位数 终 和校验
STX CMD GROUP ADDRESS BYTES ETX SUM
例子:从D123开始读取4个字节数据
02h 30h 31h,30h,46h,36h 30h,34h 03h 37h,34h
地址算法:address=address*2+1000h
再转换成ASCII
31h,30h,46h,36h
PLC返回
STX 1ST DATA 2ND DATA ..... LAST DATA ETX SUM
注:zui多可以读取64个字节的数据
例子:从的存储器单元读到3584这个数据
02h 33h 35h 38h 34h 03h 44h,36h
2、DEVICE WRITE(向PLC软设备写入值)
始 命令 首地址 位数 数据 终 和校验
STX CMD GROUP ADDRESS BYTES 1ST DATA 2ND DATA ...... LAST DATA ETX SUM
例子:向D123开始的两个存储器中写入1234,ABCD
02h 31h 31h,30h,46h,36h 30h,34h 33h,34h,31h,32h,43h,44h,41h,42h 03h 34h,39h
PLC返回
ACK (06H) 接受正确
NAK (15H) 接受错误
3、位设备强制置位/复位
FORCE ON置位
始 命令 地址 终 和校验
STX CMD ADDRESS ETX SUM
02h 37h address 03h sum
FORCE OFF复位
始 命令 地址 终 和校验
STX CMD ADDRESS ETX SUM
02h 38h address 03h sum
PLC返回
ACK(06H) 接受正确
NAK(15H) 接受错误
设备强制中的地址公式:Address=Address/8+100h
说明:
1.帧中的BYTES表示需要读取或者写入的字节数。
2.地址算法上有说明。
3.累加和是从STX后面一个字节开始累加到ETX的和。
fx_comm.h
#define DELAY_TIMES 30000L
#define TRUE 1
#define FALSE 0
#define TRUE 1
#define FALSE 0
#define FORCE_ON 0x37
#define FORCE_OFF 0x38
void init_plc(void);
int check_plc(void);
int _read_data_register(unsigned int uAddress,unsigned int number);
int _read_mdata_register(unsigned int uAddress,unsigned int number);
int _write_data_register(unsigned int uAddress,unsigned int number);
int _force_m_contact(unsigned int uAddress,unsigned char ucOn_off);
int read_data_register(unsigned int uAddress,unsigned int number);
int read_mdata_register(unsigned int uAddress,unsigned int number);
int write_data_register(unsigned int uAddress,unsigned int number);
int force_m_contact(unsigned int uAddress,unsigned char ucOn_off);
int _read_m_register(unsigned int uAddress,unsigned int number);
int read_m_register(unsigned int uAddress,unsigned int number);
int TESTING=0;
unsigned int uRead_value[25];
unsigned int uWrite_value[25];
unsigned int COMM_PORT=1;
unsigned int STATS_PORT=0x2fd;
unsigned int DATA_PORT=0x2f8;
void init_plc(void)
{ _AX=0xfa;
_DX=COMM_PORT;
geninterrupt(0x14);
while((inportb(STATS_PORT)&1)!=0) inportb(DATA_PORT);
}
//返回顶部
int check_plc(void)
{ long lTmp;
if(TESTING==1)return TRUE;
init_plc();
for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&0x20)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
return(FALSE);
outportb(DATA_PORT,5);
disable();
for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{ enable();
return(FALSE);
}
if((lTmp=inportb(DATA_PORT))==6)
{ enable();
return(TRUE);
}
else
{ enable();
return(FALSE);
}
}
//返回顶部
int read_data_register(unsigned int uAddress,unsigned int number)
{ int i;
for(i=0;i<3;i++)
if(_read_data_register(uAddress,number)==TRUE)
return TRUE;
return FALSE;
}
//返回顶部
int _read_data_register(unsigned int uAddress,unsigned int number)
{ unsigned char uSend[]={2,0x30,0x30,0x30,0x30,0x30,0x30,0x32,3,0x30,0x30};
unsigned char uReceive[104];
unsigned int uTmp;
unsigned int uSum;
unsigned int num;
long lTmp;
int i,j;
if(TESTING==1)
{ for(i=0;i<number;i++)uRead_value[i]=0;
return TRUE;
}
init_plc();
num=number*2;
if((num/16)>=10)
uSend[6]=(unsigned char)(num/16+0x41-10);
else
uSend[6]=(unsigned char)(num/16+0x30);
if((num%16)>=10)
uSend[7]=(unsigned char)((num%16)+0x41-10);
else
uSend[7]=(unsigned char)((num%16)+0x30);
uAddress=uAddress*2+0x1000;
uTmp=uAddress & 0x000f;
uSend[5]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>4) & 0x000f;
uSend[4]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>8) & 0x000f;
uSend[3]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>12)&0x000f;
uSend[2]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uSum=0;
for(i=1;i<9;i++)
uSum=uSum+(unsigned char)uSend[i];
uTmp=uSum&0x000f;
uSend[10]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uSum>>4)&0x000f;
uSend[9]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
for(i=0;i<11;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&0x20)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
return(FALSE);
}
outportb(DATA_PORT,uSend[i]);
}
disable();
for(lTmp=0;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
uReceive[0]=inportb(DATA_PORT);
if(uReceive[0]!=2)
{
enable();
return(FALSE);
}
for(i=1;i<number*4+4;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
uReceive[i]=inportb(DATA_PORT);
}
enable();
uSum=0;
for(i=1;i<number*4+2;i++)
uSum=uSum+(unsigned int)uReceive[i];
uTmp=uSum&0xf;
uTmp=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
if((unsigned char)uTmp!=uReceive[number*4+3]) return(FALSE);
uTmp=(uSum>>4)&0xf;
uTmp=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
if((unsigned char)uTmp!=uReceive[number*4+2]) return(FALSE);
for(j=0;j<number;j++)
{ for(i=j*4+1;i<j*4+5;i++)
uReceive[i]=(uReceive[i]>0x39)?uReceive[i]-0x41+0xa:uReceive[i]-0x30;
uRead_value[j]=(((((uReceive[j*4+3]<<4)+uReceive[j*4+4])<<4)+uReceive[j*4+1])<<4)+uReceive[j*4+2];
}
return TRUE;
}
//返回顶部
int read_mdata_register(unsigned int uAddress,unsigned int number)
{ int i;
for(i=0;i<3;i++)
if(_read_mdata_register(uAddress,number)==TRUE)
return TRUE;
return FALSE;
}
//返回顶部
int _read_mdata_register(unsigned int uAddress,unsigned int number)
{ unsigned char uSend[]={2,0x30,0x30,0x30,0x30,0x30,0x30,0x32,3,0x30,0x30};
unsigned char uReceive[104];
unsigned int uTmp;
unsigned int uSum;
unsigned int num;
long lTmp;
int i,j;
if(TESTING==1)
{ for(i=0;i<number;i++)uRead_value[i]=0;
return TRUE;
}
init_plc();
num=number*2;
if((num/16)>=10)
uSend[6]=(unsigned char)(num/16+0x41-10);
else
uSend[6]=(unsigned char)(num/16+0x30);
if((num%16)>=10)
uSend[7]=(unsigned char)((num%16)+0x41-10);
else
uSend[7]=(unsigned char)((num%16)+0x30);
/*uAddress=uAddress*2+0x1000;*/
uTmp=uAddress & 0x000f;
uSend[5]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>4) & 0x000f;
uSend[4]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>8) & 0x000f;
uSend[3]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>12)&0x000f;
uSend[2]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uSum=0;
for(i=1;i<9;i++)
uSum=uSum+(unsigned char)uSend[i];
uTmp=uSum&0x000f;
uSend[10]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uSum>>4)&0x000f;
uSend[9]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
for(i=0;i<11;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&0x20)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
return(FALSE);
}
outportb(DATA_PORT,uSend[i]);
}
disable();
for(lTmp=0;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
uReceive[0]=inportb(DATA_PORT);
if(uReceive[0]!=2)
{
enable();
return(FALSE);
}
for(i=1;i<number*4+4;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
uReceive[i]=inportb(DATA_PORT);
}
enable();
uSum=0;
for(i=1;i<number*4+2;i++)
uSum=uSum+(unsigned int)uReceive[i];
uTmp=uSum&0xf;
uTmp=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
if((unsigned char)uTmp!=uReceive[number*4+3])return(FALSE);
uTmp=(uSum>>4)&0xf;
uTmp=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
if((unsigned char)uTmp!=uReceive[number*4+2])return(FALSE);
for(j=0;j<number;j++)
{ for(i=j*4+1;i<j*4+5;i++)
uReceive[i]=(uReceive[i]>0x39)?uReceive[i]-0x41+0xa:uReceive[i]-0x30;
uRead_value[j]=(((((uReceive[j*4+3]<<4)+uReceive[j*4+4])<<4)+uReceive[j*4+1])<<4)+uReceive[j*4+2];
}
return TRUE;
}
//返回顶部
int write_data_register(unsigned int uAddress,unsigned int number)
{ int i;
for(i=0;i<3;i++)
if(_write_data_register(uAddress,number)==TRUE)
return TRUE;
return FALSE;
}
//返回顶部
int _write_data_register(unsigned int uAddress,unsigned int number)
{ unsigned char uSend[111];
unsigned int uTmp,uSum,num;
long lTmp;
int i;
if(TESTING==1)return TRUE;
init_plc();
uSend[0]=2;
uSend[1]=0x31;
uSend[number*4+8]=3;
num=(number*2)/16;
if(num>=10)uSend[6]=num+0x41-10;
else uSend[6]=num+0x30;
num=(number*2)%16;
if(num>=10)uSend[7]=num+0x41-10;
else uSend[7]=num+0x30;
uAddress=0x1000+2*uAddress;
uTmp=uAddress&0x000f;
uSend[5]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>4)&0x000f;
uSend[4]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>8)&0x000f;
uSend[3]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>12)&0x000f;
uSend[2]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
for(i=0;i<number;i++)
{
uTmp=uWrite_value[i]&0x000f;
uSend[i*4+9]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uWrite_value[i]>>4)&0x000f;
uSend[i*4+8]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uWrite_value[i]>>8)&0x000f;
uSend[i*4+11]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uWrite_value[i]>>12)&0x000f;
uSend[i*4+10]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
}
uSum=0;
for(i=1;i<9+number*4;i++)
uSum+=uSend[i];
uTmp=uSum&0x000f;
uSend[number*4+10]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uSum>>4)&0x000f;
uSend[number*4+9]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
for(i=0;i<11+number*4;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&0x20)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
/*enable();*/
return(FALSE);
}
outportb(DATA_PORT,uSend[i]);
}
disable();
for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
if(inportb(DATA_PORT)!=6)
{
enable();
return(FALSE);
}
else
{
enable();
return(TRUE);
}
}
int force_m_contact(unsigned uAddress,unsigned char ucOn_off)
{ int i;
for(i=0;i<3;i++)
if(_force_m_contact(uAddress,ucOn_off)==TRUE)
return TRUE;
return FALSE;
}
//返回顶部
int _force_m_contact(unsigned uAddress,unsigned char ucOn_off)
{ unsigned uSend[]={2,0x37,0x30,0x30,0x30,0x30,3,0x30,0x30};
unsigned uTmp,uSum,i;
long lTmp;
if(TESTING==1)return TRUE;
init_plc();
uAddress=uAddress+0x800;
uSend[1]=ucOn_off;
uTmp=uAddress&0x000f;
uSend[3]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>4)&0x000f;
uSend[2]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>8)&0x000f;
uSend[5]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>12)&0x000f;
uSend[4]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uSum=0;
for(i=1;i<7;i++)
uSum+=uSend[i];
uTmp=uSum&0x000f;
uSend[8]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uSum>>4)&0x000f;
uSend[7]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
for(i=0;i<9;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&0x20)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
outportb(DATA_PORT,uSend[i]);
}
disable();
for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
if(inportb(DATA_PORT)!=6)
{
enable();
return(FALSE);
}
else
{ enable();
return(TRUE);
}
}
//返回顶部
int read_m_register(unsigned int uAddress,unsigned int number)
{ int i;
for(i=0;i<3;i++)
if(_read_m_register(uAddress,number)==TRUE)
return TRUE;
return FALSE;
}
//返回顶部
int _read_m_register(unsigned int uAddress,unsigned int number)
{ unsigned char uSend[]={2,0x30,0x30,0x30,0x30,0x30,0x30,0x32,3,0x30,0x30};
unsigned char uReceive[54];
unsigned int uTmp;
unsigned int uSum;
unsigned int num;
long lTmp;
int i,j;
if(TESTING==1)
{ for(i=0;i<number;i++)uRead_value[i]=0;
return TRUE;
}
init_plc();
num=number;
if((num/16)>=10)
uSend[6]=(unsigned char)(num/16+0x41-10);
else
uSend[6]=(unsigned char)(num/16+0x30);
if((num%16)>=10)
uSend[7]=(unsigned char)((num%16)+0x41-10);
else
uSend[7]=(unsigned char)((num%16)+0x30);
uAddress=uAddress/8+0x100;
uTmp=uAddress & 0x000f;
uSend[5]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>4) & 0x000f;
uSend[4]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>8) & 0x000f;
uSend[3]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uAddress>>12)&0x000f;
uSend[2]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uSum=0;
for(i=1;i<9;i++)
uSum=uSum+(unsigned char)uSend[i];
uTmp=uSum&0x000f;
uSend[10]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
uTmp=(uSum>>4)&0x000f;
uSend[9]=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
for(i=0;i<11;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&0x20)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
/*enable();*/
return(FALSE);
}
outportb(DATA_PORT,uSend[i]);
}
disable();
for(lTmp=0;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
uReceive[0]=inportb(DATA_PORT);
if(uReceive[0]!=2)
{
enable();
return(FALSE);
}
for(i=1;i<number*2+4;i++)
{ for(lTmp=0L;lTmp<DELAY_TIMES;lTmp++)
{ if((inportb(STATS_PORT)&1)!=0)
break;
}
if(lTmp>=DELAY_TIMES)
{
enable();
return(FALSE);
}
uReceive[i]=inportb(DATA_PORT);
}
enable();
uSum=0;
for(i=1;i<number*2+2;i++)
uSum=uSum+(unsigned int)uReceive[i];
uTmp=uSum&0xf;
uTmp=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
if((unsigned char)uTmp!=uReceive[number*2+3]) return(FALSE);
uTmp=(uSum>>4)&0xf;
uTmp=(uTmp<10)?(uTmp+0x30):(uTmp+0x41-0xa);
if((unsigned char)uTmp!=uReceive[number*2+2]) return(FALSE);
for(j=0;j<number;j++)
{ for(i=j*2+1;i<j*2+3;i++)
uReceive[i]=(uReceive[i]>0x39)?uReceive[i]-0x41+0xa:uReceive[i]-0x30;
uRead_value[j]=((uReceive[j*2+1])<<4)+uReceive[j*2+2];
}
return TRUE;
}
//返回顶部
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