Emerson Process Management 3422 User Manual
Reference, Installation, and Operations Manual
Section 2: Product overview
3-9000-743 Rev S
June 2013
Status Indicators
31
CPU Board Communication Status Indicators
LED status indicators are provided on the CPU Board to indicate the serial Port A and B receive
and transmit statuses and to indicate the Ethernet port connection status (
and transmit statuses and to indicate the Ethernet port connection status (
).
Figure 2-17 Mark III CPU Board Communication Status Indicators (I.S. Interface-Side View)
Table 2-5 CPU Board General Status Indicators
Label
Description
Color Indicator
LED 1
Color indicates the metrology mode
Red - Acquisition Mode
Green - Measurement Mode
Green - Measurement Mode
LED 2
Unassigned
Red
LED 3
Unassigned
Yellow
LED 4
Unassigned
Green
LED 5
Indicates when the CPU Board is receiving
data from the
Acquisition Board
data from the
Acquisition Board
Green - Blinking when data is being received
LED 6
Unassigned
Green
LED 5 is the surest indicator of the basic system health. If LED 5 is blinking, it indicates a good
connection to the Acquisition Board and the overall operation of all firmware. LED 5 should blink even if
no transducers are connected to the Acquisition Board.
connection to the Acquisition Board and the overall operation of all firmware. LED 5 should blink even if
no transducers are connected to the Acquisition Board.
Communication Status LED Indicators