State LEDs
LED
State
Color
LED = OFF
LED = ON
LED flashes
DO0 to
DO15
Digital output Yellow Output is
OFF
Output is ON
--
DC16 to
DC23
Digital input/
output
Yellow Input/output
is OFF
Input/output is
ON
1
)
--
AI0 to AI3
Analog input Yellow Input is OFF Input is ON
2
)
--
AO0 to
AO1
Analog
output
Yellow Output is
OFF
Output is ON
2
)
--
UP
Process
supply
voltage
24 V DC via
terminal
Green Process
supply
voltage is
missing
Process
supply voltage
OK
--
CH-ERR1
Channel
error, error
messages in
groups (dig-
ital inputs/
outputs com-
bined into the
groups 1, 2,
3, 4)
Red
No error or
process
supply
voltage is
missing
Severe error
within the cor-
responding
group
Severe error
within the cor-
responding
group (e.g.
short circuit at
an output)
CH-ERR2
Red
CH-ERR3
Red
CH-ERR4
Red
CH-ERR
3
) Module error Red
--
Internal error
--
1
) Indication LED is ON even if an input signal is applied to the channel and
the supply voltage is off. In this case the module is not operating and does not
generate an input signal.
2
) Brightness depends on the value of the analog signal
3
) All of the LEDs CH-ERR1 to CH-ERR4 light up together
Measuring ranges
Input ranges voltage, current and digital input
Range
0...10 V
-10...+10
V
0...20 mA 4...20 mA Digital
input
Digital value
Decimal
Hex.
Overflow
> 11.7589 > 11.7589 > 23.5178 > 22.8142
32767
7FFF
Measured
value too
high
11.7589
:
10.0004
11.7589
:
10.0004
23.5178
:
20.0007
22.8142
:
20.0006
32511
:
27649
7EFF
:
6C01
Normal
range
Normal
range or
measured
value too
low
10.0000
:
0.0004
10.0000
:
0.0004
20.0000
:
0.0007
20.0000
:
4.0006
On
27648
:
1
6C00
:
0001
0.0000
0.0000
0
4
Off
0
0000
Device specifications
I/O modules > Digital/Analog I/O modules
2022/01/31
3ADR010278, 3, en_US
606