Siemens ET 200S Manual page 499

Operating Principle
The following figure illustrates how the synchronization group parameter works:
Figure 13-1
Note
When you install sensors of the same synchronization group, you must ensure
that the minimum clearance is adhered to (see the sensor information leaflet) to
prevent any interference between the sensors.
13.1.3 Sensor Type Parameter
Features
You use this parameter to set the sensor type for each channel.
S Reflex sensor
S Diffuse sensor
S Deactivated
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
1 2 3
Interface
module
PM
1 2
It is only possible for the sensors of the modules in
slots 2 and 6 to interfere with one another because
they are in the same synchronization group: group 1.
Synchronization group
4 5 6 Slot
4 IQ-SENSE
3 4 1
4 IQ-SENSE
Parameters
Synchronization
group
13-5