Cm As Interface, Communication States; Led (Run/Stop) Is Lit; Led As-I Is Lit; Cm As Interface, Behaviour On Communication Failure - Siemens Logo! Manual

Green (RUN)
The expansion
module
communicates with
the device to its left

CM AS Interface, communication states

The CM AS Interface knows three communication states:
The LED is lit green, red or flashes red/yellow.
AS Interface
communication OK

CM AS Interface, behaviour on communication failure

S
If the AS-Interface voltage fails, communication between
the LOGO! system and the expansion modules, which
are arranged to the right of the LOGO! CM AS-Interface
expansion module, is interrupted.
Recommendation: Position LOGO! CM AS-Interface on
the far right-hand side!
S
If communication is interrupted, the switching outputs
are reset after about 40 to 100 ms.
CM EIB/KNX, communication states
The CM EIB/KNX knows three communication states: The
LED is lit green, red or orange.
Bus connection OK,
communication OK,
no programming
mode
LOGO! Manual
A5E00380835-01

LED (RUN/STOP) is lit

The expansion
module does not
communicate with
the device to its left
Green
AS Interface
communication
failed
Green
Bus connection
interrupted
LOGO! installation and wiring
Red (STOP)

LED AS-I is lit

Red
LED BUS is lit
Red
Orange/Yellow
Initialization phase
of the expansion
module
Red/Yellow
Slave has address
"0"
Orange
Programming mode
active and bus
connection OK
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