Siemens CP 1612 A2 Operating Instructions Manual page 25

LED display
To indicate module activity, the CP 1612 A2 has four LEDs on its front panel as
illustrated in the following graphic:
O 1000 Mbps
B 10 Mbps
C 100 Mbps
D FDX (full duplex)
CP 1612 A2
A5E01169863-01, Release 04/2009
Description
25