ModbusMasterNode.writeSingleRegister()

[Modbus]

描述

Send a packet command to the Slave node to write to a single Holding Register register.

語法

node1.writeSingleRegister(write_address, write_size)

參數

  • node1: ModbusMasterNode Object.
  • write_address: The address of the Holding Register to be written to.
  • write_size: The size of the Holding Register to be written to.

回傳

Int: If it succeeds, send back MODBUS_SUCCESS and vice versa, send back EXCEPTION_CODE.

範例

#include <Modbus86.h>
  
ModbusMaster bus1;
ModbusMasterNode node1;
 
uint8_t result;
uint16_t value = 0x12AB; 
 
void setup()
{
    while(!Serial);
    Serial1.begin(115200);
    bus1.begin(MODBUS_RTU, Serial1);
    node1.attach(16, bus1);
 
    result = node1.writeSingleRegister(5, value);
     
    if (result != MODBUS_SUCCESS) {
        Serial.print("writeSingleRegister => ErrorCode: ");
        Serial.println(result);
    }
}
  
void loop() {}

也可以看看


函式庫參考主頁面

86Duino 參考的文本是根據 Creative Commons Attribution-ShareAlike 3.0 License,部分文本是從 the Arduino reference 修改的。 參考中的代碼示例已發佈到公共領域。

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