Issue
Understanding the meaning of various LED indicator lights on the front panel of Xenta Server controllers.
Product Line
TAC Vista
Environment
- Xenta Server Controllers
- 511, 527, 555, 701, 711, 721, 731, 911, 913
Cause
The LED indicators on Xenta Server controllers provide visual feedback about the device's operational status and communication activity. Interpreting these indicators correctly is essential for troubleshooting and system monitoring.
Resolution
The Xenta Server controller features multiple LED indicators that display the status of the device and its communication ports. Below is a detailed explanation of each LED and its meaning.
LED Indicator Overview
| Position | Indicator | Description |
|---|---|---|
| 1 | Neuron Status Indicator | - Off: Normal mode - Red, blinking: Unconfigured mode - Red, steady: Hardware fault |
| 2 | Serial RS-232 B Port | - RX: Data is being received - TX: Data is being transmitted |
| 3 | Overall Run Indicator | - Green, steady: Normal mode - Green, blinking: Start mode - Red, steady: Fail-safe mode - Red, blinking: Unit fault |
| 4 | Serial RS-232 A Port | - RX: Data is being received - TX: Data is being transmitted |
| 5 | Serial RS-485 C Port | - Activity Indicator: Shows communication activity |
| 6 | Ethernet 10Base-T Port | - Activity Indicator: Shows Ethernet communication activity |
Note: The LEDs for the RS-232 A interface (Position 4) do not indicate communication when using the RS-485 A interface, even though both share the internal Port A.
Diagrams
Figure 1: LED Layout on Xenta Server Device
Figure 2: Internal Serial Ports and RS-232/485 Interfaces
