unsigned char ModAddr = 1;
unsigned char ModFunction = 5;
unsigned short ModDataState; unsigned short readCmdLen = 6; /* int isReadOK = 0;
unsigned short byteCount;
unsigned char totalStrBack[100]; unsigned char ModAddrBack = 0; unsigned char ModFunctionBack = 0; unsigned short ModDataAddrBack; unsigned short ModDataStateBack; */
ModDataState = DOData[num];
writeCmdStr[0] = ModAddr;
writeCmdStr[1] = ModFunction;
writeCmdStr[2] = (unsigned char)(ModDataAddr >> 8 & 0x00FF); writeCmdStr[3] = (unsigned char)(ModDataAddr & 0x00FF);
if(ModDataState) writeCmdStr[4] = (unsigned char)(0x00FF);
else writeCmdStr[4] = (unsigned char)(0x0000); writeCmdStr[5] = (unsigned char)(0x0000); writeCmdStr[6] = '\\0';
/* ClearCom(comPort); */
SendRtuCmdToModBus(comPort, writeCmdStr, readCmdLen); return 1;
/*
isReadOK = ResponseSingleBitFromModBus(comPort, totalStrBack, &ModAddrBack, &ModFunctionBack, &ModDataAddrBack, &ModDataStateBack, MOD_TIMEOUT, MOD_WAITTIME);
if (1 == isReadOK) {
Print(\%u %u %u %u %u %u %u %u\ModAddr, ModAddrBack, ModFunction, ModFunctionBack, ModDataAddr, ModDataAddrBack, ModDataState, ModDataStateBack);
if((ModAddr == ModAddrBack) && (ModFunction == ModFunctionBack) && (ModDataAddr == ModDataAddrBack)
&& (ModDataState == ModDataStateBack)) {
Print(\ return 1; } else {
Print(\ return 0; } } else {
/*未收到字符串或CRC校验出错* / return 0; } */ }
/*-------------------------------------------------------------------------------*/
/*********************************************************************************/ /*函数名称: WriteBitByBitToModBusSlave()
*输入参数： 共 个参数； *输出参数： 共 个参数； *返回值： 成功与否；
*需储存的参数： 共 个参数； *功能介绍：
(1) 一个一个地将BIT写如触摸屏中； (2) 可能很耗时； *修改日志：
*[2006-3-7 14:40] Ver. 1.00 开始编写； *[2006-3-7 14:51]
完成； /* */ /*********************************************************************************/ int WriteBitByBitToModBusSlave(int comPort, int DOData[], int dataOld[], unsigned short num, unsigned short ModDataAddr)
{
int i;
for(i = 0; i < num; i ++) {
if(DOData[i] != dataOld[i]) { DelayMs(1);
WriteSingleBitToModBusSlave(comPort, DOData, i, ModDataAddr + i); } }
return 1; }
/*-------------------------------------------------------------------------------*/
/*********************************************************************************/ /*函数名称: WriteAllBitByBitToModBusSlave() *输入参数： 共 个参数； *输出参数： 共 个参数； *返回值： 成功与否；
*需储存的参数： 共 个参数； *功能介绍：
(1) 一个一个地将BIT写如触摸屏中； (2) 可能很耗时； *修改日志：
*[2006-3-9 12:52] Ver. 1.00 开始编写； *[2006-3-9 12:52]
完成； /* */ /*********************************************************************************/
int WriteAllBitByBitToModBusSlave(int comPort, int DOData[], unsigned short num, unsigned short ModDataAddr) {
int i;
for(i = 0; i < num; i ++) { DelayMs(1);
WriteSingleBitToModBusSlave(comPort, DOData, i, ModDataAddr + i); }
return 1; }
/*-------------------------------------------------------------------------------*/
/*********************************************************************************/
/*函数名称: ListenToTouch() *输入参数： 共 个参数； *输出参数： 共 个参数； *返回值： 无；
*需储存的参数： 共 个参数； *功能介绍：
(1)监控Touch触摸屏；
(2) init的工作给 WriteMultipleWordToModBusSlave 是否成功。
(3) 必须要DelayMs(50)才能使一下个response正确。 *修改日志：
*[2006-3-1 17:19] Ver. 1.00 开始编写； *[2006-3-1 17:33] 完成； *[2006-3-9 14:10]
测试通过； /* */ /*********************************************************************************/ void ListenToTouch(int comPort, int buttonData[], float parameterData[], int DOData[], float AIData[]) {
int kind = 1; /* adjust */
unsigned short parameterNum = PARAMETER_DATA_NUM;
unsigned short parameterAddr = PARAMETER_MODBUS_ADDR_1; /* adjust
*/
unsigned short buttonNum = BUTTON_DATA_NUM; unsigned short buttonAddr = BUTTON_MODBUS_ADDR_1; /* adjust */
unsigned short DONum = DIGITAL_OUT_DATA_NUM;
unsigned short DOAddr = DO_MODBUS_ADDR_1; /* adjust */
unsigned short AINum = ANALOG_IN_DATA_NUM;
unsigned short AIAddr = AI_MODBUS_ADDR_1; /* adjust */
int buttonNVRAMAddr = BUTTON_ADDR_1; /* adjust */
int parameterEEPROMAddr = EEPROM_BLOCK; /* adjust */
static unsigned char oldModWordBack[MOD_STR_MAX_LEN] = {'\\0'}; /* 以前的str */
static unsigned char oldModBitBack[MOD_STR_MAX_LEN] = {'\\0'};
static int responseFromTouch_init = 0; /*首次初始化*/ /* static int responseFromTouch_P = 0;
static int responseFromTouch_Btn = 0;
static int oldButtonData[30] = {0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0};
static int oldDOData[30] = {0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0}; */
int response; /*test*/
/* Print(\ */ if(0 == responseFromTouch_init) /* 第一次写入Touch_Btn失败重新写 */ { /* responseFromTouch_Btn = WriteMultipleBitToModBusSlave(comPort, buttonData, buttonNum, buttonAddr);
*/ response = WriteAllBitByBitToModBusSlave(comPort, buttonData, buttonNum, buttonAddr);
/* bitmcpy(oldButtonData, buttonData, buttonNum); */ } else {
/* 读取按钮值 */ response = ReadBitFromModBusSlave(kind, comPort, buttonData,
buttonNum, buttonAddr, buttonNVRAMAddr, oldModBitBack); }
DelayMs(50);
/* Print(\ */
if(0 == responseFromTouch_init) /* 第一次写入Touch_P失败重新写 */
{ responseFromTouch_init = WriteMultipleWordToModBusSlave(comPort, parameterData, parameterNum, parameterAddr);
response = responseFromTouch_init; /* responseFromTouch_P = 1; /*test*/ } else {
/* 读取设定参数 */
response = ReadWordFromModBusSlave(kind, comPort, parameterData, parameterNum, parameterAddr, parameterEEPROMAddr, oldModWordBack); }
/* Print(\ Print(\ */ DelayMs(2);
/* 写入开关量 */
/* response = WriteMultipleBitToModBusSlave(comPort, DOData, DONum, DOAddr); */
response = WriteAllBitByBitToModBusSlave(comPort, DOData, DONum, DOAddr);
/* bitmcpy(oldDOData, DOData, DONum); */
/* Print(\ */ DelayMs(40); /* 写入采样值 */ response = WriteMultipleWordToModBusSlave(comPort, AIData, AINum, AIAddr);
/* Print(\ */ if(response); }
/*-------------------------------------------------------------------------------*/
MODBUS通讯+C语言源代码 - 图文
