Networking

Functions

The SmartLogger monitors and manages PV systems and energy storage systems (ESSs). It converges all ports, converts protocols, collects and stores data, and centrally monitors and maintains the devices in the systems.

Networking Application

The SmartLogger is applicable to PV systems and ESSs. It supports the following:

• Local operations on the SmartLogger using the mobile app through the built-in WLAN.
• RS485 networking, which enables the SmartLogger to connect to:
  • Devices such as Huawei inverters and PID modules.
  • Third-party inverters, environment monitoring instruments (EMIs), Smart Transformer Stations (STSs), and power meters that use the Modbus RTU protocol.
  • Power meters that use the DL/T645 protocol.
  • Devices that use the IEC 103 protocol.
• Ethernet networking, which enables the SmartLogger to connect to the inverters, Smart Power Control System (Smart PCS), Smart String ESSs, MBUS CCO, and STSs.
• MBUS networking, which enables the SmartLogger to connect to Huawei inverters and PID-PVBOXs that support MBUS communication.
• Dual-plane redundancy networking to provide reliable transmission.
• Connection to management systems:
  • Connects to a management system or third-party device that uses the Modbus TCP protocol over a wired or wireless network.
  • Connects to a management system or a third-party device that uses the IEC 104 protocol in the LAN over a wired network.
  • Connects to a management system or a third-party device that uses the GOOSE protocol over a wired network.

The SmartLogger cannot be connected to a management system that uses the IEC 104 protocol over a 4G/3G/2G or LTE dedicated network.

Typical Networking Scenarios

• The SmartLogger supports the following northbound wired networks: fiber ring network, fiber star network, and Ethernet star network.

Figure 2-3 Fiber ring network

• A maximum of 15 SmartLoggers can be connected to form a fiber ring network. Each SmartLogger can connect to devices such as inverters, EMIs, and power meters.
• The fiber channel switch must support and enable the standard RSTP, and the bridge priority of the switch must be higher than 0x8000 of the SmartLogger (recommended value: 0x7000; a smaller value indicates a higher bridge priority). For details about how to configure the RSTP and bridge priority of the switch, contact the vendor. If the switch does not support the RSTP, the fiber ring topology must be changed to a chain or star topology.
• Multiple fiber ring networks can be connected to the management system over Ethernet switches.

Figure 2-4 Fiber or Ethernet star network

• Multiple SmartLoggers can be connected to the management system over Ethernet switches.
• When the SmartLogger connects to an Ethernet switch over optical fibers, the maximum communication distance is 12 km (with the 100M optical module) or 10 km (with the 1000M optical module). The maximum communication distance is 100 m when an Ethernet cable is used for connection.

• The SmartLogger supports the following wireless networks: 4G/3G/2G networking and LTE dedicated networking.

Figure 2-5 4G networking

Figure 2-6 LTE dedicated networking

• The WAN port of the SmartLogger connects to the customer-premises equipment (CPE) through the power over Ethernet (PoE) module and PoE surge protective device (SPD).
• The IP addresses of the SmartLogger and CPE must be on the same network segment.