writeMultipleCoils()
描述
向 Slave 節點發送寫入多個 Coils 暫存器的封包指令。
語法
node1.writeMultipleCoils(write_address, write_size)
node2.writeMultipleCoils()
- 有無參數所搭配的函式與使用方法不同,詳見範例以示說明。
參數
node1/node2
: ModbusMasterNode
物件。
write_address
:欲寫入的 Coils 暫存器之起始位址。
write_size
:欲寫入的 Coils 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 <Arduino.h> #include <Modbus86.h> ModbusMaster bus1; ModbusMasterNode node1; uint8_t result; void setup() { while(!Serial); Serial1.begin(115200); bus1.begin(MODBUS_RTU, Serial1); node1.attach(16, bus1); node1.setTransmitBuffer(0, true, MODBUS_DATAMODE_BIT); node1.setTransmitBuffer(1, false, MODBUS_DATAMODE_BIT); result = node1.writeMultipleCoils(5, 2); if (result != MODBUS_SUCCESS) { Serial.print("ErrorCode: "); Serial.println(result); } } void loop() { }
#include <Arduino.h> #include <Modbus86.h> ModbusMaster bus1; ModbusMasterNode node1; uint8_t result; void setup() { while(!Serial); Serial1.begin(115200); bus1.begin(MODBUS_RTU, Serial1); node1.attach(16, bus1); node1.beginTransmission(5); node1.sendBit(true); node1.sendBit(false); result = node1.writeMultipleCoils(); if (result != MODBUS_SUCCESS) { Serial.print("ErrorCode: "); Serial.println(result); } } void loop() { }
See Also
- writeSingleCoil()
- setTransmitBuffer()
- beginTransmission()
- sendBit()
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.