Mounting 
  5.2 Mounting with built-in ring light and mini-lens 
SIMATIC MV500 
Operating Instructions, 05/2019, C79000-G8976-C494-02 
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5.2  Mounting with built-in ring light and mini-lens 
 
Disconnecting SIMATIC MV500 from the power supply 
Make sure that the power supply is switched off when installing/uninstalling the devices as 
well as the internal ring light, EF lens and micro SD adapter.  
 
M2.5 hexagon socket-head screws (3x) 
Right light / Ring light holder 
Figure 5-1  Setup of SIMATIC MV540 optical reader with built-in ring light, mini-lens and protective 
lens barrel 
Proceed as follows to mount the SIMATIC MV540 optical reader with built-in ring light, mini-
lens and protective lens barrel: 
1.  Remove the protective foil from the reader. 
2.  Mount the ring light/ring light holder 
③. 
–  Make sure that the ring light holder is aligned correctly and fully flush when it is 
mounted. If needed, turn one of the hexagon socket screws back a little. 
–  Fasten the ring light holder 
③ with the three hexagon socket screws ④ onto the 
reader (≤ 0.45 Nm). 
3.  Screw the desired lens 
① into the lens mount of the reader ②. 
4.  Insert the micro SD adapter 
⑤ into the reader interface provided ②. 
If needed, insert a micro SD card into the adapter 
5.  If needed, replace the attachment of the built-in ring light. 
The attachments can be easily removed from the ring light or placed on it. Ensure that the 
attachment is correctly aligned. 
You can find detailed information on the ring light attachments in the following section.