ABB Network Partner AB
Local man machine
communication
Version 1.0-00
1MRK 580 156-XEN
Page 3 - 20
Signal: Indicates that ...
Green LED, steady light The operating condition of a terminal is
normal.
Green LED, flashing light An internal error is detected within the
terminal. You can block a terminal or
operate with reduced functionality,
depending on the type of error and the
internal configuration.
Yellow LED, steady light One or more disturbances are recorded
and stored in the terminal.
Yellow LED, flashing light The terminal is in test mode or configura-
tion mode.
Red LED, steady light At least one of the protection functions
issued a trip command during a distur-
bance recording.
Red LED, flashing light The terminal is blocked by an internal or
external command.
2.2 LCD display The liquid crystal display (LCD) provides detailed information on the ter-
minal. Normally, it is dark. Select any button to turn on the current status
of all LEDs and display the type of terminal with its version, together with
instructions on how to continue local communication with the terminal.
The display shuts down after you exit the menu tree or if no button is
selected for more than about 45 minutes.
The disturbance summary (automatic scrolling of disturbance data for the
last two disturbances) is active if there is a disturbance report in a termi-
nal, which is not yet acknowledged.
2.3 Buttons The number of buttons used on the MMI module was reduced to the mini-
mum acceptable amount to make the communication as simple as possible
for the user. The buttons normally have more than one function, depend-
ing on where they are used in the dialogue.
All buttons have one function in common: when the display is in idle
(dark, non active) mode, selecting any of them results in activation of the
display.
The C button has three main functions, it:
• Cancels the operation, when used together with the dialogue windows.
• Provides an Exit operation in a menu tree. This means that each
selection of the C button within the menu tree results in stopping the
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