Response Of The Analog Modules During Operation And If Faults Occur; Influence Of The Power Supply And The Operating Status On Analog Input And Output Values - Siemens Simantic ET 200S Manual

Analog electronic modules

4.4 Response of the Analog Modules during Operation and if Faults Occur

4.4 Response of the Analog Modules during Operation and if Faults Occur
4.4
4.4.1 Influence of the power supply and the operating status on analog input and output
values
The input and output values of the analog modules are dependent on the power supply for
electronics/sensors and on the operating state of the PLC (CPU of the DP master). The table
below shows this dependency..
Table 4-27 Dependence of the Input and Output Values on the Operating State of the PLC (CPU of the DP Master) and
the Power Supply Voltage L+
Operating State of the PLC
(CPU of the DP Master)
POWER ON RUN
POWER ON STOP
POWER OF -
F
4-24
Power supply L+ on Input Value of the Electronics Module
ET 200S (power
module)
L+ present Process values
7FFF
startup, or after assignment of
parameters for the module is
completed.
L+ missing 7FFF
L+ present Process value
L+ missing 7FFF
L+ present -
L+ missing -
with Analog Inputs (Evaluation
Possible on the CPU of the DP
Master)
until first conversion after
H
H
H
Output Value of the Electronics
Module with Analog Outputs
PLC values
Until first value output:
After startup, a signal of
•
0 mA or 0 V is output.
Dependent on the
•
parameter "CPU/ master
STOP"
-
Dependent on the parameter
"CPU/ master STOP"
-
Dependent on the parameter
"CPU/ master STOP"
-
Manual, Edition 10/2005, A5E00514527-01
ET 200S