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14.8 NETWK Unit Status Display
14.8.3 Display example of the NETWK unit status display
(1) LED status
Displays the MELSECNET/H communication unit operation status.
*: For monochrome display, it is displayed as (lit) or (not lit).
(2) Loop information
Displays the MELSECNET/H communication unit loop status.
*: For the GT15-J71BR13, "---" is displayed.
No. Item
LED
color
*
Lit Not lit
(a)
RUN Green Data link normal Data link error
MNG Green Operating as control station
Operating other than as control
station
S.MNG Green Operating as sub control station
Operating other than as sub
control station
D.LINK Green Data link being executed Data link stopped
T.PASS Green Baton pass being executed Baton pass not executed
SW.E. Green Switch setting error Normal
M/S.E. Green
Duplicate station number and
control station error
Normal
PRM.E. Green Parameter error Normal
GOT R/W Green Accessed from GOT Not accessed from GOT
(b)
CRC Red Code check error Normal
OVER Red Data entry delay error Normal
AB.IF Red All reception data 1 Normal
TIME Red Time limit exceeded Normal
DATA Red Reception data error Normal
UNDER Red Send data error Normal
LOOP Red
Forward/reverse loop reception
error
Normal
SD Green Sending data
RD Green Receiving data
No. Item Description
(c)
F loop* Displays the status (Normal/NG) of the F loop.
R loop* Displays the status (Normal/NG) of the R loop.
FLoopBK Sta*
Displays the F loopback station execution status (No per/Number of the
station at which loopback is executed).
RLoopBK Sta*
Displays the R loopback station execution status (No per/Number of the
station at which loopback is executed).
Loop Back *
Displays the loopback status (No per/Perf).
No per: Loop normal, forward loop error, reverse loop error,
data link not possible
Perf: During loopback
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