Proface GP4100 - 3.4 Compact HMIs" - Manual (Page 28)

Chapter 2 Part Names and Functions
2-3
F: Ethernet Interface
The Ethernet transmission interface (10BASE-T/
100BASE-TX). An RJ-45 type modular jack
connector (8-pole) is used. The LED turns on or off
to indicate the current status.
LED Status Indicates
LINK
Green
ON Data transmission
available
Green
OFF
No connection or
subsequent
transmission failure
ACT
Green
ON Data transmission is
occurring.
Green
OFF
No data transmission