Connection 
  6.5 Operating optical reader with external ring light 
SIMATIC MV500 
Operating Instructions, 05/2019, C79000-G8976-C494-02 
85 
6.5  Operating optical reader with external ring light 
You can operate the optical reader with the external ring lights. Note that when operating a 
SIMATIC MV500 with an external ring light, the power supply may not be provided via a 
communication module. 
Connecting cables 
 
Note 
Use the "Strobe" output signal to operate external ring lights 
You can operate external ring lights using the "Strobe" out
put signal. The strobe signal is 
high active. The "high active" time corresponds to the on
-load factor of the external ring light.
If you use an optical reader with an external lighting unit in your application, wire up your 
application according to the following wiring diagrams. 
 
External ring light holder 
SIMATIC MV500 optical reader 
Connecting cable external ring light 
Figure 6-11  Connection and wiring for external ring light