Panasonic MINAS A6 Multi Series Technical Reference page 52

 L/A IN, L/A OUT
L/A IN, L/A OUT indicator will show the LINK status and operation status of Each port's physical layer.
Indication is lighted in green.
LED Content
OFF LINK not established
Flickering LINK established. There are data transmission and reception.
ON LINK established. There are no data transmission and reception.
If the period until LINK establishment is too long, this phenomenon may be improved by the following
measures.
 Changing bit11 (Auto MDI/MDI-X mode) in Pr7.22 "Communication function extended setup 1".
 Setting the Pr6.18 values of adjacent servo drivers to different values (example: 0.0 s and 0.1 s).
 Relevant parameters
Class No. Attribute
6 18 R
7 22 R
Title Range
Power-up wait time 0 to 100
Communication -32768 to
32767
function extended
setup 1
Unit Function
0.1 s Set up the standard initialization time approx.
1.5 s + α(setting value×0.1s) after power-up.
For example, in the case of the preset value 10, it is set to
1.5s+(10×0.1 s) = approx. 2.5s.
If the period until LINK establishment is too long, this
phenomenon may be improved by setting the Pr6.18 values for
adjacent servo drivers to different values (for example, 0.0 s
and 0.1 s).
-
bit11：Auto MDI/MDI-X mode
0：mode0
1：mode1
If link establishing is late, it might be improved by changing the
setting.
Front Panel Specifications
3-6