beginTransmission()
描述
設定欲寫入的 Slave 裝置暫存器之起始位址,與無引數的 writeMultipleCoils
或 writeMultipleRegisters
搭配使用,詳見範例以示說明。
語法
node1.beginTransmission(write_address)
參數
node1
: ModbusMasterNode
物件。
write_address
:欲寫入的 Slave 裝置暫存器之起始位址。
範例
#include <Arduino.h> #include <Modbus86.h> ModbusMaster bus1; ModbusMasterNode node2; uint8_t reg[2]; uint8_t result; void setup() { while(!Serial); Serial1.begin(115200); bus1.begin(MODBUS_RTU, Serial1); node2.attach(16, bus1); reg[0] = 0x1234; reg[1] = 0xabcd; node2.beginTransmission(5); node2.send(reg[0]); node2.send(reg[1]); result = node2.writeMultipleRegisters(); if (result != MODBUS_SUCCESS) { Serial.print("ErrorCode: "); Serial.println(result); } } void loop() { }
See Also
- writeMultipleCoils()
- writeMultipleRegisters()
- sendBit()
- send()
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.