DPU Front Panel
Metso Automation MAX Controls
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277573
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2-5
Serial I/O and DPU Status Section
LED
What the Colors Mean
Serial port1
Green = serial port 1 transmitting.
Red = serial port 1 receiving.
Serial port2
Green = serial port 2 transmitting.
Red = serial port 2 receiving.
Status Section LED Indicators
DI
Fast Digital Input Scanning:
green =
all points good
red =
all points bad
yellow =
some points good and some points bad
off =
no points executing
DO
Fast Digital Output Scanning:
green =
all points good
red =
all points bad
yellow =
some points good and some points bad
off =
no points executing
Per IO
Periodic Input/Output scanning Analog
Inputs, Control Blocks, Data Blocks
green =
all points good
red =
all points bad
yellow =
some points good and some points bad
off =
no points executing
Prog IO
ExCEL Input/Output Scanning
green =
all points good
red =
all points bad
yellow =
some points good and some points bad
off =
no points executing
Backup Status LEDs
The following two LEDs report backup link status.
LED
What the Colors Mean
RX
green = Receiving data.
TX
green = Transmitting data.