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(Optional) Connecting Teamwork and Monitoring Communications Cables
- Units of different models and software versions cannot be networked for teamwork.
- Select a monitoring cable connection mode based on the protocol supported by the NMS.
- If the NMS supports the Modbus-RTU protocol, select RS485 monitoring.
- If the NMS supports Modbus-TCP/SNMP, select FE monitoring.
- The teamwork modes include FE teamwork and CAN teamwork. FE teamwork is recommended. FE teamwork support point-to-point communication, long-distance cascading, and group upgrade. If the number of units in a group is greater than 16, FE teamwork needs to be implemented by group. The total length of CAN teamwork cables should be less than or equal to 310 m. Otherwise, the communication quality will be affected.
- The teamwork communications cables should be CAT 5e or higher shielded network cables (cable impedance ≤ 10 m/ohm). Shielded metal RJ45 connectors should be used. The shield layer of the network cables should be reliably connected to the shield layer of the RJ45 connectors to ensure that the shield layers are properly grounded; otherwise, the teamwork networking of the units may fail. If the RJ45 connectors are of poor quality or are not properly crimped, the communication may be abnormal. Use a standard crimping tool to crimp the RJ45 connectors onsite.
- The length of the network cable between adjacent units should be less than or equal to 100 m. Route cables in compliance with local standards. Take appropriate shielding measures, such as using a galvanized pipe or an ELV cable tray, to reduce the impact of electromagnetic interference on teamwork communication.