[Modbus]
Description
Send a packet command to the Slave node to write to multiple Coils registers.
Syntax
node1.writeMultipleCoils(write_address, write_size)
node2.writeMultipleCoils()
(See the example to illustrate the different functions and usage methods with or without parameters)
Parameters
node1/node2: ModbusMasterNode Object.write_address: The starting address of the Coils register you want to write to.write_size: The size of the Coils register that you want to write to.
Returns
Int: If it succeeds, send back MODBUS_SUCCESS and vice versa, send back EXCEPTION_CODE.
Example
#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
Libraries Reference Home
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.
