Units
Output range 0 to
10 V
Output range 0 to
20 mA
Decimal
Hexadecimal
Range
10 V
20 mA
27648
6C00
H
7.5 V
15 mA
20736
5100
H
361.7 μV
723.4 nA
1
0001
H
0 V
0 mA
0
0000
H
Nominal range
-1
FFFF
H
0.00 V
0.00 mA
-32768
8000
H
Underflow
10.3
Influence of the range of values
Influence of analog signal on input value
The response of the I/O devices with analog inputs depends on the position of the input
values within the range of values. The table below shows this dependency.
The measured value lies
Result
SF LED
Diagnostics data range
of device
Interrupt
Within the nominal range
Measured value
‑
‑
‑
Within the overrange/underrange
Measured value
‑
‑
‑
Within the overflow
7FFF
H
On
Entry
1
Diagnostic interrupt
1
Within the underflow
8000
H
On
Entry
1
Diagnostic interrupt
1
Before parameter assignment
7FFF
H
-
-
-
Within an incorrect parameter assign
ment
2
Measured value
On
Entry
Diagnostic interrupt
Within an incorrect initial parameter
assignment
7FFF
H
On
Entry
Diagnostic interrupt
1
If the the
group diagnostics
and
measuring range
parameters are enabled for the input device.
2
If a channel was previously parameterized correctly, it continues running with the last parameters.
Influence of output value on analog output
The response of I/O devices with analog outputs depends on the position of the input values
within the range of values. The table below shows this dependency.
The output value lies
Result
SF LED
Diagnostics data range
of device
Interrupt
Within the nominal range
Value from the IO
Controller
‑
‑
‑
Within the overrange/underrange
Value from the IO
Controller
‑
‑
‑
Within the overflow
0 signal
-
-
-
Within the underflow
0 signal
-
-
-
198
ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
I/O device analog input/analog output
10.3 Influence of the range of values
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