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How to read the LED indicator lights on a Xenta Server controller

Issue

  • Blinking red lights
  • Solid red lights
  • Blinking orange light
  • Blinking green light
  • Solid green light

Environment

  • Xenta Server Controllers
  • 511, 527, 555, 701, 711, 721, 731, 911, 913

Cause

The indicator lights on the face of the Xenta Server controllers can help explain the state of the controller in many different situations.

Resolution

A number of light-emitting diodes (LEDs) on the Xenta device indicate that the application program is running and when communication is in progress.

 

 Fig. 1: LED diagram on the Xenta Server device.

 

Table1: LED description on the Xenta Server device.  

 

Position

Description

1

Neuron status indicator

• Off – Normal mode

• Red, blinking – Unconfigured mode

• Red, steady – Hardware fault

2

Serial RS-232 B port activity indicators:

• RX – Indicates that data is received

• TX – Indicates that data is transmitted

3

Overall Run indicator

• Green, steady – Normal mode

• Green, blinking – Start mode

• Red, steady – Fail-safe mode (see    description below)

• Red, blinking – Unit fault

4

Serial RS-232 A port activity indicators:

• RX – Indicates that data is received

• TX – Indicates that data is transmitted

5

Serial RS-485 C port activity indicator.

6

Ethernet 10Base-T activity indicator

Note

• The LEDs for the RS-232 A interface (position 4) do not indicate communication when using the RS-485 A interface although internal port A is used for both.

 

 

 

 

 

 

 

Fig. 2: Internal serial ports and RS-232/485 interfaces.

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