ModbusMasterNode.writeSingleCoil()

#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() {}