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EElink - TK319‑L Protocol

This page provides a public, non sensitive overview of the communication protocol context for the EElink TK319‑L when used with Plaspy. It explains how the tracker reports location, telemetry, and alarm events to Plaspy and what aspects of the device protocol matter for integration and reliable operation. The content focuses on protocol role and connection context rather than implementation specifics.

Plaspy uses shared connection settings across supported devices and automatically detects the tracker protocol once the device reports to the platform. For Plaspy the server endpoint is reachable at d.plaspy.com or 54.85.159.138 and the platform listens on port 8888. The TK319‑L may be configured to report using UDP or TCP on port 8888. Exact protocol behavior can vary by firmware version, hardware revision, and manufacturer implementation, so verify device specific behavior with the manufacturer when necessary.

Protocol Overview​

The protocol determines how the TK319‑L packages and sends GNSS/LBS positions, I/O and alarm events, and optional telemetry so Plaspy can interpret and display those data points. For the TK319‑L the publicly documented integration path uses EELINK protocol 2.0 as the device side protocol, which Plaspy recognizes and maps to platform fields for tracking and reporting.

  • Carries position reports from GPS and assisted location information so Plaspy can render live location and history.
  • Transmits vehicle inputs and alarm states like ACC, overspeed, crash, vibration, low battery, and power off for event processing.
  • Sends peripheral sensor and telemetry data from RS232 or GPIO connected devices so sensor values are available in Plaspy reports.
  • Enables identification of the device to the platform so messages are attributed to the correct asset and configuration.
  • Supports remote control or command flows when device firmware and configuration allow Plaspy to issue authorized commands such as immobilizer actions.

How Plaspy Detects the Protocol​

Plaspy accepts inbound connections at a single shared endpoint and port and automatically determines the active tracker protocol from the incoming data. In most cases a properly configured device that reports to the Plaspy endpoint does not require manual protocol selection within the platform.

  • Plaspy exposes a single listening endpoint at d.plaspy.com and at IP 54.85.159.138 on port 8888 for device reporting.
  • The platform performs automatic protocol detection so most users do not need to choose a protocol manually.
  • When the TK319‑L is configured to report to the Plaspy endpoint using the appropriate transport, Plaspy will recognize EELINK protocol 2.0 and map fields accordingly.
  • If a device fails to register or report correctly, checking network reachability to d.plaspy.com and verifying port and transport settings is a first troubleshooting step.
  • Plaspy standardizes the handling of device messages so telemetry and alarms from different models appear consistently in the dashboard.

Transport and Connection Context​

Connection transport and addressing are separate from the protocol framing. The TK319‑L supports cellular transports and can be configured to use either UDP or TCP depending on device firmware and deployment needs. Plaspy listens for device messages on a single port for all supported devices.

  • Devices may be configured to point to the Plaspy server using the domain d.plaspy.com or the server IP 54.85.159.138.
  • Plaspy listens on port 8888 for device traffic and all devices connected to Plaspy use this same port.
  • The TK319‑L can be set to use UDP or TCP on port 8888 depending on module support and configuration choices.
  • Network policies and carrier behavior can affect whether UDP or TCP is preferable for a given deployment, so validate transport settings during installation.
  • Verify APN and cellular connectivity for NB‑IoT, LTE Cat M1, or GSM fallback paths to ensure the device can reach d.plaspy.com on port 8888.

Protocol Compatibility Notes​

  • EELINK protocol 2.0 is the publicly indicated integration protocol for the TK319‑L but exact message behavior can differ between firmware releases.
  • Hardware revisions or regional SKUs may include different feature sets or optional I/O, affecting which telemetry fields are present.
  • Carrier and network mode differences between NB‑IoT, LTE Cat M1, and GSM fallback can influence reporting frequency and available transport options.
  • Selecting UDP versus TCP can change delivery characteristics; choose the transport supported by your firmware and network conditions.
  • Always validate device configuration against the device documentation supplied with the TK319‑L and confirm server settings point to d.plaspy.com or 54.85.159.138 on port 8888.
  • When integrating peripherals such as fuel sensors, confirm the device firmware exposes those inputs in a format the platform recognizes.

Why Protocol Understanding Matters​

A practical understanding of the tracker protocol helps technical teams set up devices correctly, spot configuration issues faster, and ensure long term reliability of tracking data in Plaspy. Knowing the role of the protocol leads to better testing, monitoring, and predictable operational behavior.

  • Simplifies initial setup by ensuring the device points to the correct Plaspy endpoint and transport.
  • Helps with troubleshooting when messages do not appear in Plaspy or when expected telemetry values are missing.
  • Guides decisions about transport selection, reporting intervals, and firmware updates that affect device behavior.
  • Ensures alarm and I/O mappings in Plaspy reflect the device capabilities and installed peripherals.
  • Supports orderly validation of remote control or immobilizer features where the device and platform both allow such actions.

Why Use Plaspy with This Protocol​

Using the TK319‑L with Plaspy provides a straightforward path to fleet visibility, event alerting, and sensor telemetry for organizations that need centralized monitoring. The device’s NB‑IoT and LTE Cat M1 connectivity plus GSM fallback, combined with EELINK protocol 2.0, make it a practical choice for mixed fleets where reliable reporting and compact installation are priorities. Plaspy maps position, I/O, and alarm data from the TK319‑L into dashboards and reports so operations teams can act on live events and historical trends.

To learn more about Plaspy and how it handles device integrations, visit https://www.plaspy.com. For the most current protocol details, firmware notes, and device specific documentation for the TK319‑L, consult the manufacturer at https://www.eelink.com.cn as protocol support and firmware behavior can change over time.

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