User manual
REI2 
User manual 
Doc: R2U_2_1079_002_E 
Version: 1.07.9 
Page 
11 of 64 
2.1.3. Main keyboard 
2
F5
ALT
ENT
ESC
0
F4F3F2F1
1
4
789
6
32
5
0:11.539
START
STOP
1
3
4
56 7 9
8
10
11
Fig. 4 – Main keyboard 
1  <F1> <F2> <F3> <F4> <F5> function keys 
2  <Printer> key: when pressed alone it winds the paper forward, together with the <ALT> 
key it winds it back 
3  <Light > key activates the back lighting of the graphic display 
4  <ALT> key modifies the functioning of the other keys 
5  <ENT> key usually confirms what is done 
6  <ESC> key usually allows you to quit what you are doing 
7 Numeric keyboard 
8  <Arrow up> key 
9  <Arrow down>key 
10  <Displayboard> key with activation led allows you to manage the functioning of the 
displayboard/displayboards 
11  <Start/Stop> key modifies the types of event on which you are working 
The functioning of the various keys can change according to the program used. 










