IAI America E-Con User Manual
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2. X-SEL-J/K/P/Q/JX/KX/PX/QX
2.3.3 Monitor LED Indicators
The two LEDs, MS and NS, provided on the front panel of the board are used to check the board (node)
condition and network condition. (The remaining two LEDs are not currently used.)
The LEDs illuminate in two colors (red and green), and you can monitor the conditions listed in the table
below based on the illumination status and color of each LED.
MS (Module Status) LED:
Condition of the board (node) itself
NS (Network Status) LED: Condition of the network
LED
Color
Illumination status
Description (meaning)
Green
Steady light
The board is operating normally.
Steady light
A hardware error occurred. The board must be replaced.
Red
Blinking
A minor error occurred, such as a DIP switch setting error or configuration
error. The error can be reset by, for example, reconfiguring the applicable
setting.
MS
- Off
Power is not supplied from the X-SEL controller.
The X-SEL controller must be repaired or the board must be replaced.
Steady light
Network connection has been established and the board is
communicating normally.
Green
Blinking
The board is online, but network connection is not yet established.
Communication is stopped. (The network is normal.)
Steady light
Node address duplication or bus-off state was detected.
Communication is not possible.
Red
Blinking
A communication error occurred (communication time-out occurred).
NS
- Off
• The board is not online.
• DeviceNet power is not supplied.
Self test is performed when the power is turned on.
During the test, the monitor LEDs cycle in the following sequence:
[1] NS turns off.
[2] MS illuminates in steady green (approx. 0.25 second).
[3] MS illuminates in steady red (approx. 0.25 second).
[4] MS illuminates in steady green.
[5] NS illuminates in steady green (approx. 0.25 second).
[6] NS illuminates in steady red (approx. 0.25 second).
[7] NS turns off.
When the self test is finished and the board starts communicating normally, both the MS and NS
LEDs change to steady green.