Display Section - Omron CJ Series Operation Manual

2 CompoNet Master Unit

2-1-3 Display Section

Communications Indicators
The following LED indicators are provided for communications.
MS (Module Status): Shows the status of the node itself. (Two colors: green and red)
NS (Network Status): Shows the status of communications. (Two colors: green and red)
SD (Send Data): Shows Master Unit transmission status. (One color: yellow)
RD (Receive Data): Shows Master Unit reception status. (One color: yellow)
Indicator
MS
NS
SD
RD
The indicator flashing intervals are approximately 0.5 s lit and 0.5 s not lit.
2-4
Status Status definition
Lit green Normal
Lit red Fatal error
Flashing red Non-fatal error
Not lit Power OFF/Prepar-
ing
Lit green Online, with remote
I/O communica-
tions in progress
Flashing green Online, with no
remote I/O commu-
nications in
progress
Lit red Fatal communica-
tions error
Flashing red Non-fatal commu-
nications error
Not lit Power OFF/Prepar-
ing
Normal transmis-
Lit yellow
sion
No transmission
Not lit
Normal reception
Lit yellow
No reception
Not lit
CJ-series CompoNet Master Unit Operation Manual for NJ-series CPU Unit (Cat. No. W493)
Meaning
The Unit is operating normally.
Unit hardware error, such as a watchdog timer
error (WDT)
Communications mode number or unit number
setting error
Power OFF, resetting, or initializing
Power is being supplied, remote I/O communi-
cations have started, there are no communica-
tions errors at any Slave Unit or Repeater Unit,
there are no Registration Table errors, and
there are no node address duplication errors for
Slave Units or Repeater Units.
Remote I/O communications have not started
or have stopped (for a reason other than a com-
munications error).
An error has occurred in the communications
circuit.
A communications error has occurred at one or
more Slave Units or Repeater Units.
A verification error (non-existent or unregis-
tered Slave Unit) has occurred at one or more
Slave Units.
Communications have stopped due to a com-
munications error.
An illegal configuration error (number of
Repeater Units) has occurred.
An address duplication error has occurred at
one or more Slave Units or Repeater Units.
Power OFF, resetting, or initializing
Frames are being sent normally from the Mas-
ter Unit.
The Master Unit is not sending data.
Frames are being sent normally from a Slave
Unit.
The Master Unit is not receiving data.