Interface ModbusFrame

A received Modbus RTU frame whose CRC has been verified.

interface ModbusFrame {
    address: number;
    exception?: number;
    functionCode: number;
    pdu: Buffer;
}

Properties

address: number

The unit (slave) address the frame is addressed to or came from.

exception?: number

The exception code a device reported, or null when the frame is not an exception response.

functionCode: number

The function code. An exception response carries the request's code with its high bit set, as it appeared on the wire.

pdu: Buffer

The protocol data unit: the function code and its data, without the address or the CRC.