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SmartLogger3000 User Manual

This document describes the SmartLogger3000 and SmartModule1000A01 in terms of installation, electrical connections, system operation, maintenance, and troubleshooting. BOM number: 02312SCU, 02312SCU-001, 02312SCU-002, 02312SCU-003, 02312SCU-004, 02312SCU-005, 02312SCU-006, 02312SCU-007, 02312SCU-008, 02312SCU-009, 02312SCU-010, 02312SGF, 02312SGG, 02312SGK and 02312SGJ.

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Connecting an RS485 Communications Cable

Connecting an RS485 Communications Cable


  • The SmartLogger can connect to RS485 communications devices, such as a solar inverter, an environmental monitoring instrument (EMI), a power meter, and a PID over the COM port.
  • Ensure that RS485+ is connected to COM+ of the SmartLogger and RS485– is connected to the COM– of the SmartLogger.


  1. Connect an RS485 communications cable.

    Figure 4-2 Connecting an RS485 communications cable


    Silk Screen


    COM1, COM2, and COM3


    RS485A, RS485 differential signal+

    RS485B, RS485 differential signal–

  2. If devices need to be cascaded, cascade the devices and then connect them to the SmartLogger.

    • You are advised to connect fewer than 30 devices to each RS485 route.
    • The baud rate, communications protocol, and parity mode of all devices on an RS485 cascading link must be the same as those of the COM port on the SmartLogger.
    Figure 4-3 Cascading connection

Updated: 2020-02-21

Document ID: EDOC1100108365

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