6
LED Indication
Section 1-4
1-4
LED Indication
MS (Module Status) : To indicate the node status. (green and red)
NS (Network Status) : To indicate the communications status. (green and red)
Note
The indicators flash in 0.5 second interval, i.e., they light for 0.5 second and
become unlit for another 0.5 second.
LED Name
Indicating state
Status
Meaning
MS
Green light
Normal state
The Master Board is in normal operation.
Green flash
Stand-by
It waits for a start-up by the application.
Red light
Fatal error
Master Board hardware error (including Watchdog Timer
(WDT) error)
Red flash
Non-fatal error
EEPROM read error or PC WDT error
Unlit
Power-off or in
preparation
One of the following applies:
Power is off.
The system is resetting or initializing.
NS
Green light
Online and in remote I/O
communications
All of the followings apply:
⋅
Power is supplied. Remote I/O communications starts up.
⋅
None of the Slave and Repeater Units has
communications error.
⋅
No Registration Table error exists.
⋅
None of the Slave and Repeater Units has node address
duplication.
Green flash
Online and in
preparation for remote
I/O communications
It is before the remote I/O communications starts or during
communication. (In any state other than the communication
stop due to a communications error.)
Red light
Fatal communication
related error
The communications circuit has an error.
Red flash
Non-fatal communication
related error
One of the following applies:
⋅
One or more Slaves or Repeater Units has a
communications error.
⋅
One or more Slaves or Repeater Units has a Registration
Table error. That means a Slave Unit to participate is not
participating or a non-registered Slave Unit is
participating.
⋅
The communications stops due to a communications
error.
⋅
Illegal configuration error (an error of Repeater levels)
⋅
One or more Slaves or Repeater Units had node address
duplications.
Unlit
Power-off or in
preparation
One of the following applies: Power is off. The system is
resetting or initializing.
Содержание 3G8F7-CRM21
Страница 4: ...iv...
Страница 10: ...x TABLE OF CONTENTS...
Страница 30: ...10 Specifications Section 1 7 1 7 3 Dimensions 3G8F7 CRM21 PCI unit mm 3G8F8 CRM21 CompactPCI unit mm...
Страница 46: ...26 Connecting the Communications Power Supply Cables Section 2 4...
Страница 74: ...54 Board Hardware Error Notification Section 4 8...
Страница 173: ...153 APPENDIX D Sample Program D 1 Sample Program 154...
Страница 230: ...210 Wiring for Power Supply Section E 5...
Страница 234: ...214 Index...
Страница 236: ...216 Revision History...
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