[Modbus]
Description
Send a packet command to the Slave node to write to multiple Holding Registers.
Syntax
node1.writeMultipleRegister(write_address, write_size)
node2.writeMultipleRegister()
(See the example to illustrate the difference in function and usage with or without parameters.)
Parameters
node1/node2: ModbusMasterNode Object.write_address: The starting address of the Holding Registers you want to write to.write_size: The size of the Holding Registers to be written 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 reg[2];
uint8_t result;
void setup()
{
while(!Serial);
Serial1.begin(115200);
bus1.begin(MODBUS_RTU, Serial1);
node1.attach(16, bus1);
reg[0] = 0x1234;
reg[1] = 0xabcd;
node1.setTransmitBuffer(0, reg[0], MODBUS_DATAMODE_UINT16);
node1.setTransmitBuffer(1, reg[1], MODBUS_DATAMODE_UINT16);
result = node1.writeMultipleRegisters(5, 2);
if (result != MODBUS_SUCCESS) {
Serial.print("ErrorCode: ");
Serial.println(result);
}
}
void loop()
{
}#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
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.
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