[Modbus]
Description
Send a packet command to the Slave node to write to a single Coil register.
Syntax
node1.writeSingleCoil(write_address, value)
Parameters
node1: ModbusMasterNode Object.write_address: The address of the Coil register you want to write to.value: The value of the Coil register to write to, usually 0 or 1.
Returns
Int: If it succeeds, send back MODBUS_SUCCESS and vice versa, send back EXCEPTION_CODE.
Example
#include <Modbus86.h>
ModbusMaster bus1;
ModbusMasterNode node1;
uint8_t result;
uint8_t led = 1;
void setup()
{
while(!Serial);
Serial1.begin(115200);
bus1.begin(MODBUS_RTU, Serial1);
node1.attach(16, bus1);
result = node1.writeSingleCoil(5, led);
if (result != MODBUS_SUCCESS) {
Serial.print("writeSingleCoil => 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.
