Operator control (hardware)
4.2 Setting the operating mode
Optical link module
26 Operating Instructions, 01/2020, C79000-G8976-C270-06
Mode "redundant optical ring"
CH2 is set to this mode when S1 and S2 are in position 1.
mode when S3 and S4 are in position 1.
Note
Always set the "redundant optical ring" mode on both optical channels of a module.