ABB AC500 PLC - Page 31

LED State Color LED = ON LED = OFF LED flashing
PWR Power supply Green Power supply
present
Power supply
missing
--
RUN RUN/STOP
state
Green Processor
module is in
state RUN
Processor
module is in
state STOP
Fast flashing
(4 Hz): The
processor
module is
reading/
writing data
from/to the
memory card.
If the ERR-
LED is also
flashing, data
is being
written to the
Flash-
EEPROM.
Slow flashing
(1 Hz): The
firmware
update from
the memory
card has been
completed
successfully.
ERR Error indica-
tion
Red An error
occurred
No errors or
only warnings
encountered
(E4-errors).
The LED
behavior for
the error
classes 2 to 4
is configu-
rable.
With 4 Hz
(fast): dis-
plays together
with the RUN
LED a cur-
rently running
a firmware-
upgrade or
writing data to
the Flash-
EPROM.
Each processor module contains up to 15 LEDs (depending on type) to display the states of the
inputs and outputs.
Processor
module
LED State Color LED = ON LED = OFF
PM55x-xP
PM56x-xP
I0...I7
(PM55x-xP)
I0...I5
(PM56x-xP)
Digital input Yellow Input is ON Input is OFF
O0...O5 Digital output Yellow Output is ON Output is OFF
PM56x-xP AI0, AI1 *) Analog input Yellow Input is ON Input is OFF
AO Analog output Yellow Output is ON Output is OFF
*) The analog inputs AI0 and AI1 can be configured as digital input or analog input.
I/O LEDs
Device Specifications
Processor Modules > AC500-eCo
2019/04/17 3ADR010121, 13, en_US 31