Western Scale m2000D, Техническое руководство

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m
2000D technical manual
Page 44
G
ENERAL
D
IAGNOSTICS
DLC S
TATUS
I
NDICATORS
The following information describes the use of the 3 status LEDs located on the DLC slave
boards as a means of making a meaningful diagnosis of the state of the DLC
communications link.
DLC
-
S
TATUS LED
LED STATE INTERPRETATION REMEDY
Œ
Blinking
consistently
once every
second DLC slave is configured to operate as
the primary slave in normal run mode.
CONDITION – normal
•
Blinking
consistently
10 times a
second DLC slave is configured to operate as
the secondary slave in normal run
mode CONDITION – normal
OPTIONAL: To operate the DLC as secondary
slave, change the slave ID jumper to the
secondary position. This jumper is located on
the DLC slave board.
Changing the slave ID jumper should only
be done in calibration mode. The jumper
setting gets stored with the calibration data.
Ž
Blinking one
short
followed by
one long
consistently DLC slave is in firmware upgrade
mode and configured as the primary
slave. CONDITION – abnormal
•
Blinking two
short
followed by
one long
consistently DLC slave is in firmware upgrade
mode and configured as the secondary
slave. CONDITION – abnormal
This state is entered when the user removed the
ID select jumper from the DLC slave before
power up. This state is used in conjunction with
calibration command 555 to update the
firmware in the DLC slave.
This mode might also be entered automatically
during bootup if the DLC slave detects an
invalid code image of the firmware.
If this mode was entered intentionally, proceed
with firmware upgrading. Else, power down
and up again to alleviate the condition. If
condition persists, perform a firmware upgrade.
•
Non of the
above
sequences
CONDITION - abnormal
When two DLC slaves are connected, one DLC
should be in state
Œ
and the other slave in
state
•
Slaves should never be in the same
state, which will cause communication failures.
In such a case, make sure that the ID select
jumpers on the slaves are not set to the same
position.
Changing the slave ID jumper should only
be done in calibration mode. The jumper
setting gets stored with the calibration data.
GENERAL
DIAGNOSTICS