enum io.ModbusException

enum ModbusException
{
    IllegalFunction         = 1,
    IllegalDataAddress      = 2,
    IllegalDataValue        = 3,
    ServerDeviceFailure     = 4,
    Acknowledge             = 5,
    ServerDeviceBusy        = 6,
    MemoryParityError       = 8,
    GatewayPathUnavailable  = 10,
    GatewayDeviceNoResponse = 11,
};