Yaskawa MEMOCON GL120 - Manual (Page 265)

4.4 Communications Modules
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4.4.14 Optical/Electrical Conversion Module
1. Appearance
Module description
Color code (yellow)
LED area
Electrical port (PORT1)
DIP switch
Optical port 1 (PORT2)
Optical port 2 (PORT3)
Module mounting screw
(Use M4 Phillips screwdriver.)
LED Color Meaning when ON
READY Green Module is operating normally.
TX1 Green Module is sending data from electrical port.
RX1 Green Module is receiving data from electrical port.
TX2 Green Module is transmitting data from optical port 1.
RX2 Green Module is receiving data from optical port 1.
TX3 Green Module is transmitting data from optical port 2.
RX3 Green Module is receiving data from optical port 2.
Note The Module is not sending or receiving data normally if the LEDs TX1 to TX3 and RX1 to RX3
are all OFF.
Figure 4.62 Appearance of Optical/Electrical Conversion Module
4
LED area