Effect On Analog Value Representation; Effect Of The Supply Voltage And The Operating State On Analog Output Values - Siemens SIMATIC ET 200S Manual

Voltage output ranges: 1 to 5 V
Table 4-4 SIMATIC S7 format: Output range 1 V to 5 V
Output range
1 to 5 V
0
5,7000
:
5,0002
5,0000
:
1,0000
0,9998
:
0
0
4.4

Effect on analog value representation

4.4.1

Effect of the supply voltage and the operating state on analog output values

The output values of the analog modules are dependent on the supply voltage for
electronics/encoders and on the operating state of the PLC (CPU of the DP master). This is
illustrated by the table below.
Table 4-5
Operating state of the PLC
(CPU of the DP master)
POWER ON
POWER ON
POWER OFF
2AO U ST analog electronic module (6ES7135-4FB01-0AB0)
Manual, 04/2007, A5E01076916-01
Decimal
> 32511
32511
:
27649
27648
:
0
-1
:
-6912
< -6913
Relationship between the analog output values for the operating state of the PLC (CPU
of the DP master) and the supply voltage L+.
Supply voltage L+ on
ET 200S (power module)
RUN L+ present
L+ missing
STOP L+ present
L+ missing
- L+ present
L+ missing
4.4 Effect on analog value representation
Units
Hexadecimal
> 7EFF
H
7EFF
H
:
6C01
H
6C00
H
:
0
H
FFFF
H
:
E500
H
< E4FF
H
Output value of the electronic module
PLC values
Until first value output:
•
•
-
Dependent on the parameter
"CPU/master STOP"
-
Dependent on the parameter
"CPU/master STOP"
-
Analog value representation
Range
Overflow
Overshoot range
Nominal range
Underrange
Underflow
with analog outputs
After startup, a signal of 0 mA or 0 V
is output.
Dependent on the parameter "CPU/
master STOP"
17