SensorModbusMaster.h file

Classes

union leFrame

A frame for holding parts of a response. Define a little-endian frame as a union - that is a special class type that can hold only one of its non-static data members at a time.

class modbusMaster

The class for communicating with modbus devices.

Enums

enum endianness { littleEndian = 0, bigEndian }

The "endianness" of returned values.

enum pointerType { holdingRegister = 0, inputRegister, inputContacts, outputCoil }

The types of "pointers" to other modbus addresses.

enum modbusErrorCode { NO_ERROR = 0x00, ILLEGAL_FUNCTION = 0x01, ILLEGAL_DATA_ADDRESS = 0x02, ILLEGAL_DATA_VALUE = 0x03, SLAVE_DEVICE_FAILURE = 0x04, ACKNOWLEDGE = 0x05, SLAVE_DEVICE_BUSY = 0x06, NEGATIVE_ACKNOWLEDGE = 0x07, MEMORY_PARITY = 0x08, GATEWAY_PATH_UNAVAILABLE = 0x0A, GATEWAY_TARGET_DEVICE_FAILED_TO_RESPOND = 0x0B, WRONG_SLAVE_ID = 0xD, BAD_CRC = 0xE, NO_RESPONSE = 0xF }

The types of errors that can occur during Modbus communication.

Typedefs

using endianness = enum endianness

The "endianness" of returned values.

using pointerType = enum pointerType

The types of "pointers" to other modbus addresses.

using modbusErrorCode = enum modbusErrorCode

The types of errors that can occur during Modbus communication.

using leFrame = union leFrame

A frame for holding parts of a response. Define a little-endian frame as a union - that is a special class type that can hold only one of its non-static data members at a time.

Defines

#define RESPONSE_BUFFER_SIZE = 256

The size of the response buffer for the modbus devices.

#define COMMAND_BUFFER_SIZE = 256

The size of the command buffer for the modbus devices.

#define MODBUS_TIMEOUT = 500

The default time to wait for response after a command (in ms)

#define MODBUS_FRAME_TIMEOUT = 4

The default time to wait between characters within a frame (in ms)

#define BYTE_SIZE = 1

The size of a single byte in bytes.

#define UINT16_SIZE = 2

The size of a uint16_t in bytes.

#define INT16_SIZE = 2

The size of an int16_t in bytes.

#define UINT32_SIZE = 4

The size of a uint32_t in bytes.

#define INT32_SIZE = 4

The size of an int32_t in bytes.

#define FLOAT32_SIZE = 4

The size of a float32 in bytes.

#define TAI64_SIZE = 8

The size of a 64-bit timestamp in bytes.

#define TAI64N_SIZE = 12

The size of a 64-bit timestamp plus a 32-bit nanosecond in bytes.

#define TAI64NA_SIZE = 16

The size of a 64-bit timestamp plus a 32-bit nanosecond plus a 32-bit attosecond in bytes.

#define POINTER_SIZE = 2

The size of a pointer in bytes (when using Arduino system)

Enum documentation

Typedef documentation

Define documentation