Siemens SIMATIC ET 200S Installation And Operating Manual page 179

Monitoring time
-> PROFIsafe monitoring time
Motor Starter (MS)
Motor starter is a general term referring to direct starters and reversing starters. Motor
starters are used to specify motor startup and direction of rotation.
M-Switch
In the ET 200S fail-safe modules, every fail-safe digital output consists of a P-switch DOx P
(current sourcing) and an M-switch DOx M (current sinking). The load is connected between
the P and M-switches. The two switches are always controlled so that voltage is applied to
the load.
Nonequivalent Sensor
A nonequivalent -> sensor is a reversing switch that is connected to two inputs of an
-> F-I/O (via 2 channels) in -> F-systems (for -> 1oo2 evaluation of sensor signals).
Parameter assignment
Configuration with PROFIBUS-DP: Transfer of slave parameters from the DP master to the
DP slave
Configuration of modules/submodules: Setting the behavior of modules/submodules with the
STEP 7 configuration software
Passivation
If an -> F-I/O module detects a fault, it switches either the affected channel or all channels to
a -> safe state; that is, the channels of the F-I/O module are passivated. The F-I/O signals
the detected faults to the -> F-CPU.
For an F-I/O with inputs, if passivation occurs, the F-system provides fail-safe values for the
safety program instead of the process values pending at the fail-safe inputs.
For an I/O module with outputs, if passivation occurs, the F-system transfers fail-safe values
(0) to the fail-safe outputs instead of the output values provided by the safety program.
PD
Programming Device (PD): Personal Computer in special compact industrial design. A PD is
fully equipped for programming SIMATIC automation systems.
Prewiring
Prewiring means wiring the terminal modules before inserting the electronic modules.
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
Glossary
Glossary-5