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Bosch Rexroth AG
Diagnostics and status indicators
9.3
Indicators on input/output modules
9.3.1
LEDs on the power connectors
Designa-
Color
Meaning
tion
D
Red/yel-
Diagnostics for local bus communication
low/green
Run
Active
Device applica-
tion not active
Ready
Connected
Reset
Not connected
Power down
U
Green
U
x
x
E1/E2
Red
Error
Fig. 9-4
LEDs on the power connectors
U
(U
)
I
Input
U
(U
)
O
Output
U
(U
)
IO
Input/Output
U
(U
)
A
Analog
The LEDs of the input/output modules are located on the connectors.
D
D
D
UI
UO
UA
E1
E1
E1
E2
E2
Fig. 9-3
LEDs on the power connectors (examples)
State
Description
Green ON The device is ready for operation, communication within the station is
OK.
All data is valid. There are no faults.
Flashing
The device is ready for operation, communication within the station is
green
OK.
The data is not valid. Valid data from the controller/higher-level net-
work is not available.
There is no fault in the module.
Flashing
The device is ready for operation, communication within the station is
green/yel-
OK.
low
Output data cannot be output and/or input data cannot be read.
There is a fault on the I/O side of the module.
Yellow
The device is ready for operation, but has still not detected a valid
ON
cycle after power-on.
Flashing
The device is not (yet) part of the active configuration.
yellow
Red ON
The device is ready for operation, but has lost the connection to the
bus head.
Flashing
The device is ready for operation, but there is no connection to the pre-
red
vious device.
OFF
Device is in (power) reset.
ON
I/O supply is present.
OFF
I/O supply is not present.
ON
Error, see module-specific documentation
OFF
No error
Voltages U
:
x
Supply for digital input modules; sensor/encoder supply
Supply for digital output modules
Supply for digital input and output modules
Supply for analog modules
DOK-CONTRL-S20*SYS*INS-AP02-EN-P
IndraControl S20 System and Installation
D
E1
UO
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