Siemens SIMATIC S7-1500R/H Getting Started page 45

Programming
The light intensity limit value for the exterior light sensors and light intensity
Using the "Lighting parameters" button you display the following:
● The limit value for outdoor light sensors
● The limit values for day / twilight / night light
● The light intensity in the tunnel according to the time of day
The outdoor light sensors on the tunnel control the respective entrance light in the tunnel.
The interior lights are controlled by the time of day.
In the example, the outdoor light sensor measures 1, the night light setting (subdued light) is
thus effective for the entry into the tunnel.
You can change the limit values for the tunnel.
Figure 3-7
44
HMI screen for light limit value
S7-1500R/H redundant system
Getting Started, 10/2018, A5E44910930-AA