Modem & Router
How to Troubleshoot Non-Real-Time Data Transmission in Robustel Gateway's Edge to Cloud Function
Overview Recently, customers have reported that when using the Robustel gateway's Edge to Cloud function, after collecting data from Siemens PLCs at the south end, the data transmitted via MQTT to the MES system at the north end is not real-time. For ...
How to Troubleshoot Robustel Gateway（RobustOS System） Unable to Obtain IP Address After Inserting SIM Card
Overview A normal SIM card's internet access primarily involves two steps: registration and dial-up. Many users find that after inserting a SIM card into a Robustel gateway, the SIM card can register with the operator but cannot obtain an IP address ...
How to Configure Custom Firewall Rules via CLI on RobustOS?
Overview This guide provides instructions for network administrators who need to implement specific network access policies that are not covered by the standard firewall settings on a Robustel gateway. If you need to create advanced, customized ...
How to assign multiple Ethernet ports to different LAN interfaces on RobustOS Devices?
Overview By default, all Ethernet LAN ports on a Robustel router are bridged together and assigned to a single LAN interface (lan0). This configuration is suitable for simple flat networks. However, for scenarios requiring network segmentation—such ...
How to add a secondary IP(Multiple IP) address to the LAN interface?
Overview This guide explains how to add a secondary IP address to a LAN interface on a Robustel router running RobustOS. This configuration is primarily used to enable communication with terminal devices on a different IP subnet without altering the ...
How to modify the DHCPv4 scope for the LAN interface on RobustOS Devices?
Overview This guide provides step-by-step instructions on how to configure the Dynamic Host Configuration Protocol (DHCP) server settings for a Local Area Network (LAN) interface on a Robustel router running RobustOS. This is useful when you need to ...
How to Configure SMS Notifications for Router Events on RobustOS Devices?
Overview In many remote or mission-critical deployments, it is crucial for administrators to be notified immediately of specific events occurring on their IoT gateways, such as a system reboot, a VPN tunnel going down, or a link failure. This guide ...
How to Configure Email Notifications for Router Events on RobustOS Devices?
Overview When managing network devices, it's crucial to be aware of important events, such as system reboots, connection failures, or configuration changes. This guide provides a step-by-step process for configuring a Robustel router running RobustOS ...
How to access a RobustOS device via SSH?
Overview Secure Shell (SSH) provides a secure, encrypted connection to your Robustel gateway, allowing for advanced command-line access. This is essential for developers, system administrators, and support engineers who need to perform in-depth ...
How to configure serial to TCP client transparent transmission on RobustOS Devices?
Overview When you have a serial device (like a sensor, PLC, or data logger) that needs to send data over a network to a central server, you can configure a Robustel gateway to act as a bridge. This guide will show you how to set up the gateway to ...
How to configure serial to TCP server transparent transmission on RobustOS Devices?
Overview This guide provides instructions on how to configure a Robustel router to function as a TCP server for transparent serial data transmission. This setup is ideal for scenarios where you need to connect a legacy serial device (like a PLC, ...
How to configure a Modbus RTU to Modbus RTU over TCP on RobustOS Devices?
Overview When you have a Modbus RTU slave device that needs to be accessed by a Modbus RTU master over a TCP/IP network, you can use a Robustel gateway to act as a transparent bridge. The gateway will encapsulate the serial Modbus RTU data into TCP ...
How to Configure Modbus ASCII to Modbus ASCII over TCP on RobustOS Devices?
Overview When you have a Modbus ASCII slave device that needs to be accessed by a Modbus ASCII master over a TCP/IP network, you can use a Robustel gateway to act as a transparent bridge. The gateway will encapsulate the serial Modbus ASCII data into ...
How to configure a Modbus ASCII to Modbus TCP server on RobustOS Devices?
Overview In industrial and IoT environments, it's common to have legacy devices that communicate using the Modbus ASCII protocol over a serial connection (RS232/RS485). However, modern monitoring and control systems typically operate over IP networks ...
How to configure a Modbus RTU to Modbus TCP server on RobustOS Devices?
Overview In industrial and IoT environments, it's common to have legacy devices that communicate using the Modbus RTU protocol over a serial connection (RS232/RS485). However, modern monitoring and control systems typically operate over IP networks ...
How to set up Wi-Fi AP mode on RobustOS Devices?
Overview This guide provides step-by-step instructions on how to configure your Robustel gateway to function as a Wi-Fi Access Point (AP). This setup allows you to create a local wireless network, enabling devices such as laptops, smartphones, and ...
How to connet to Wi-Fi on RobustOS Devices?
Overview This guide provides instructions on how to configure a Robustel gateway to connect to an existing Wi-Fi network as a client. This setup is useful when you want the gateway to use a local Wi-Fi network for its internet connection, instead of ...
How to configure APN for the cellular network on RobustOS Devices?
Overview When using a Robustel gateway with a SIM card, the device usually connects to the cellular network automatically. However, in some scenarios, such as using a private network or a specific carrier plan, the gateway may fail to obtain an IP ...
How to enble NTP server on Windows System to sync the time with Robustel device in a private network?
Overview The customer's factory operates on a pure internal network. Our R5020Lite gateway is required to collect data and transmit it to the factory's server database (Windows Server) for storage. Simultaneously, as the database has an MQTT program ...
How to manually configure the Ethernet port speed
Overview By default, the Ethernet ports on the gateway are set to "Auto-Negotiation" mode to automatically match the optimal speed and duplex mode of the connected device. However, in certain specific scenarios (e.g., when connecting to legacy ...
How to Install an App（ROS System）
Oveview This document provides step-by-step instructions for installing applications on your Robustel gateway through the App Center interface. The App Center allows you to extend device functionality by installing additional applications for ...
How to Save System Logs to NVM (Non-Volatile Storage)
Overview By default, gateway system logs may be stored in RAM (memory), which means the content is lost after a power cycle. Configuring the log save location to NVM (Non-Volatile Memory) ensures that system logs are retained persistently across ...
How to Set Up Remote Syslog Logging
Overview Configuring remote syslog allows the gateway to send its system log messages to a centralized syslog server for unified storage and analysis. This facilitates centralized monitoring, troubleshooting, and long-term audit trail keeping. This ...
How to configure dual-SIM failover
Overview To ensure high availability of network connectivity for IoT devices, when the primary cellular network (SIM card) fails, the gateway can automatically switch to the backup cellular network. This guide will walk you through configuring the ...
How to Check and Export Event Logs
Overview This document provides instructions for viewing system event logs and exporting diagnostic data from the Robustel gateway's web management interface. The logging functionality helps monitor system operations, troubleshoot issues, and ...
How to reset ROS device to factory defaults?
Overview This document provides step-by-step instructions for restoring your Robustel gateway to its original factory default settings. This process will erase all current configurations (including network settings, user accounts, and custom ...
How to Change the Default Administrator Password and Set Up User Accounts on ROS Devices (e.g., R1520)
Overview The default administrator account credentials (admin/admin) provided on the device are clearly insecure. This document explains how to modify the admin password to ensure secure login and how to add user accounts. What You Will Need Hardware ...
How to Access the Web Management Interface（ROS）
Overview This document provides step-by-step instructions for accessing the Robustel gateway's Web Management Interface. This interface is the primary tool for configuring and monitoring all gateway settings. Access is achieved by physically ...
How to Override DNS
Overview If the gateway cannot connect to services via domain names, such as RCMS connection and NTP time synchronization failures (see the logs below), but the SIM card is registered and can ping the public IP address, troubleshooting can be done by ...
How to Control Digital Output (DO) via SMS
Overview Remote control of Digital Outputs (DOs) offers flexibility and convenience in managing connected devices. One commmon method is through a centralized management system, such as RCMS, which provides a web-based interface to monitor and ...
How to Generate System Diagnostic Data on RobustOS
Overview If you encounter any problems while using the Robustel device, please follow the steps below to troubleshoot. Steps 1. Reproduce the problem Please try to reproduce the problem as much as possible. If you cannot reproduce it, please save the ...
How to Enable RCMS via SSH CLI?
Overview This guide outlines the steps to enable RCMS using SSH CLI commands. Ensure you have SSH access and admin credentials. Steps Connect via SSH Make sure SSH is enabled. Open the firewall for either remote SSH or local SSH as applicable. Enable ...
R3000LG Using Base Station TLS to Connect to Loriot Guide
R3000LG Using Base Station TLS to Connect to Loriot Guide Overview This guide is designed to assist users in configuring the R3000LG device to connect to the Loriot LoRaWAN network server using the Base Station TLS protocol. The following steps will ...
RobustOS Configuration Guide (RCMS / FW / Ping Detection)
Overview This guide outlines the complete process for configuring and upgrading cellular gateway devices across three stakeholder companies: Device Holder (Stock Manager & Main Player) Customers (End Users) Monitoring Company (RCMS Server Operator) ...
How to Enable Ping Detection via Config/Profile XML File
Overview This guide explains how to configure ping detection using a config.xml file, which can be deployed via: RCMS platform Web UI USB drive Complete Ping Detection Configuration Block <ping> <enable>true</enable> ...
How to Setup Ping Detection via Web UI
Overview This guide explains how to configure ping detection for monitoring network connectivity on your cellular gateway device. Prerequisites Web UI access to the device Network server addresses for ping detection WWAN (cellular) interface ...
How to Update Firmware via Web UI
Prerequisites Device web interface access Latest firmware file Stable network connection Update Process Direct Steps Access the device web interface Navigate to System > Update Click "Choose File" and select firmware Click "Update" button Accept the ...
How to Set up Ping Detection
Why Ping Detection is Critical Ping detection serves as an essential keep-alive mechanism for your RCMS (Remote Cloud Monitoring Solution) connectivity. This feature: Actively monitors real-time connectivity to the RCMS platform Identifies network ...
Understanding 5G Performance Factors in Mobile Networks
Bandwidth Impact on 5G Performance The allocated bandwidth significantly influences 5G network performance: Narrow bandwidth (e.g., 3MHz) severely limits theoretical maximum speeds (15-25 Mbps) Standard 5G deployments typically utilize much wider ...
How to Update Firmware via USB
Prerequisites Device with USB update support USB flash drive (FAT32 formatted) Key file for authentication Latest firmware file Device access for initial setup Device Preparation Enable USB Update Feature Access device web interface Navigate to ...