LED
State
Color
LED = OFF
LED = ON
LED flashes
Inputs
I0...I7
Analog input Yellow Input is OFF Input is ON
(brightness
depends on
the value of
the analog
signal)
--
Outputs
O0...O7
Analog
output
Yellow Output is
OFF
Output is ON
(brightness
depends on
the value of
the analog
signal)
--
UP
Process
voltage
24 V DC via
terminal
Green Process
voltage is
missing
Process
voltage OK
--
CH-ERR2
Channel
error, error
messages in
groups
(analog
inputs or out-
puts com-
bined into the
groups 2 and
4)
Red
No error or
process
voltage is
missing
Severe error
within the cor-
responding
group
Error on one
channel of the
group
CH-ERR4
Red
CH-ERR *) Module error Red
--
Internal error
--
*) Both LEDs (CH-ERR2 and CH-ERR4) light up together
Measuring ranges
Input ranges of voltage, current and digital input
The represented resolution corresponds to 16 bits.
Range
0...10 V
-10...+10
V
0...20
mA
4...20
mA
Digital
input
Digital value
Decimal
Hex.
Overflow >11.7589
>11.758
9
>23.517
8
>22.814
2
32767
7FFF
Meas-
ured
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
meas-
ured
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
4
OFF
0
0000
0.0000
-0.0004
:
:
3.9994
-1
-4864
-6912
FFFF
ED00
E500
Device specifications
I/O modules > Analog I/O modules
2022/01/31
3ADR010278, 3, en_US
543