writeSingleRegister()
描述
向 Slave 節點發送寫入單一 Holding Register 暫存器的封包指令。
語法
node1.writeSingleRegister(write_address, write_size)
參數
node1
: ModbusMasterNode
物件。
write_address
:欲寫入的 Holding Register 暫存器之位址。
write_size
:欲寫入的 Holding Register 暫存器之大小。
回傳
int
:如果成功回傳 MODBUS_SUCCESS
,反之回傳 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() { }
See Also
The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.