Diodes And Inputs Connected In Series - Mitsubishi Electric Melsec-F FX2NC Series Hardware Manual

FX2NC Series Programmable Controllers
5.1.3

Diodes and inputs connected in series;

Vdrop across the diode Max. 4V
No more than 2 LEDs should be connected in series.
Figure 5.4 : Series diodes
Ex. Sink
FX Main unit
2NC
FX Extention
2NC
block
X
COM
COM
FX FX
0N, 2N
Extention block
X
S/S
Inputs 5.
5-6