The CiA 443 CANopen profile for SIIS level-2 devices covers all simple sensors, multi-functional meters, and valves used in so-called Christmas trees. The default physical layer is ISO 11898-3 compatible. The default bit-rate is 50 kbit/s. The CANopen node-ID is assigned by Layer Setting Services (LSS). The profile specifies a boot-loader mode, and the starting and stopping of application programs. Simple sensors include pressure, temperature, and position sensors as well as inclinometers. The profile also supports multi-phase flow, wet-gas, oil-in-water, and some other complex meters as well as dedicated detectors (e.g. PIG). There is no mapping defined for the four default TPDOs and RPDOs. The PDO communication parameters are pre-defined.