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- /**
- * Modbus slave example 1:
- * The purpose of this example is to link a data array
- * from the Arduino to an external device.
- *
- * Recommended Modbus Master: QModbus
- * http://qmodbus.sourceforge.net/
- */
- #include <ModbusRtu.h>
- // data array for modbus network sharing
- uint16_t au16data[16] = {
- 3, 1415, 9265, 4, 2, 7182, 28182, 8, 0, 0, 0, 0, 0, 0, 1, -1 };
- /**
- * Modbus object declaration
- * u8id : node id = 0 for master, = 1..247 for slave
- * u8serno : serial port (use 0 for Serial)
- * u8txenpin : 0 for RS-232 and USB-FTDI
- * or any pin number > 1 for RS-485
- */
- Modbus slave(1,0,0); // this is slave @1 and RS-232 or USB-FTDI
- void setup() {
- slave.begin( 115200 ); // baud-rate at 115200
- }
- void loop() {
- slave.poll( au16data, 16 );
- }
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