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Megastek - GVT-500 Protocol

This page describes the public protocol context for using the Megastek GVT-500 tracker with Plaspy. It explains how the tracker typically communicates position, status, and alarm information to Plaspy without exposing private parser code or manufacturer internals. The GVT-500 combines Glonass and GPS positioning, an RS-232 interface, data logging with Micro SD, multiple inputs and outputs, and remote control features such as fuel and power cut, all of which produce telemetry that the reporting protocol carries to a server.

Plaspy uses shared connection settings across supported devices and automatically detects the tracker protocol when devices report to the platform. Plaspy server domain is d.plaspy.com. Plaspy server IP is 54.85.159.138. The port is 8888. The device may be configured using UDP or TCP on port 8888. All devices in Plaspy use the same port. Exact protocol behavior can vary by firmware version, hardware revision, and manufacturer implementation, so you should validate any device specific settings against manufacturer guidance during setup.

Protocol Overview​

The GVT-500 reporting protocol is the set of messages and conventions the tracker uses to send location, sensor and event data to a remote server. For Plaspy integration the protocol's public role is to: identify the device, carry GNSS fixes, and transmit event-driven signals so the platform can present usable tracking and alarm information.

  • Deliver GNSS position reports and timestamps so Plaspy can plot location and track movement.
  • Report digital and analog inputs including ACC, motion, SOS, and over speed events for alarm handling.
  • Convey device identification and status so Plaspy can associate incoming messages with an account and asset.
  • Carry remote control acknowledgements and state updates for features such as fuel and power cut where supported.
  • Transmit data logger records and periodic heartbeats to support history and device health monitoring.

How Plaspy Detects the Protocol​

Plaspy listens on a shared public endpoint and analyzes incoming device traffic to determine the reporting protocol. For the GVT-500, correct device configuration to point to the Plaspy endpoint is the primary requirement for automatic detection and processing.

  • Plaspy server domain is d.plaspy.com and Plaspy server IP is 54.85.159.138 for direct addressing.
  • The port is 8888 and all supported devices use the same port on the Plaspy side.
  • The device may be configured using UDP or TCP on port 8888 depending on the device and network setup.
  • Plaspy automatically detects the tracker protocol when properly addressed to the platform endpoint.
  • In most cases you do not need to select a protocol manually inside Plaspy if the device is correctly configured to report to the Plaspy endpoint.

Transport and Connection Context​

Transport selection and the server target are connection level details that determine how messages reach Plaspy. The GVT-500 supports conventional IP reporting methods that you can point at Plaspy using either domain name or IP address, and the same port is used for all compatible devices.

  • The device may be configured using UDP or TCP on port 8888 depending on device support and operator preference.
  • Devices can be set to report to d.plaspy.com or directly to 54.85.159.138.
  • The port number for reporting to Plaspy is 8888 and Plaspy uses the same port for every supported tracker model.
  • Use the transport mode supported by your modem and the network operator to achieve stable delivery.
  • Ensure APN and SIM network settings are correct so the tracker can reach the Plaspy endpoint.

Protocol Compatibility Notes​

  • Firmware versions can change message timing, supported fields, and optional features. Always check the device firmware notes when diagnosing behavior differences.
  • Hardware revisions or regional model variants may alter available I/O, sensor labeling, or transport capabilities.
  • Some GVT-500 features such as remote cut functions, voice monitoring, or data logger export depend on both device firmware and server-side command support.
  • Selecting UDP versus TCP affects delivery guarantees and firewall traversal; choose the mode appropriate for your deployment.
  • Confirm the device is configured to report to d.plaspy.com or 54.85.159.138 using port 8888 to allow Plaspy to receive telemetry.
  • Validate compatibility and any special setup steps against Megastek official documentation for your exact model and firmware.

Why Protocol Understanding Matters​

Understanding how the GVT-500 communicates helps ensure a reliable integration with Plaspy and simplifies troubleshooting when devices do not behave as expected. Protocol awareness also informs choices about transport, reporting intervals, and which device features will be visible in the platform.

  • Helps confirm the device is reporting to the correct Plaspy endpoint and port.
  • Guides troubleshooting for missing GPS fixes, sensor states, or alarm reports.
  • Informs decisions about reporting frequency to balance tracking accuracy and data usage.
  • Clarifies which device features are expected to appear in Plaspy dashboards and logs.
  • Reduces configuration errors by aligning device settings with Plaspy connection requirements.

Why Use Plaspy with This Protocol​

Using the Megastek GVT-500 with Plaspy lets organizations consolidate location, alarm, and sensor data in a purpose built fleet management platform. The GVT-500’s GNSS accuracy, inputs and outputs, and remote control capabilities provide rich telemetry that Plaspy can present for operational visibility, safety alerts, and historical analysis.

Plaspy is designed to accept reports from many tracker models using a single shared port, and it automatically detects the tracker protocol when devices report to the platform endpoint. To learn more about how Plaspy supports device integrations and fleet features visit https://www.plaspy.com. For the most current device specific protocol details, firmware notes, and hardware revision information verify documentation on the manufacturer website https://www.megastek.com/.

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