Dil Switches S5 / S6 With Olm / G11-1300 And Olm / G12-1300; Mixed Operation Olm V4 With Olm V2 (Sinec L2Fo) - Siemens SIMATIC NET Operating Instructions Manual

Operator control (hardware)

4.4 DIL switches S5 / S6 with OLM / G11-1300 and OLM / G12-1300

4.4 DIL switches S5 / S6 with OLM / G11-1300 and OLM / G12-1300
In OLM V4 devices for glass fiber-optic cable (1300 nm), the DIL switches S5 and S6 do not
have a function (reduction of optical transmit power not possible).
Nevertheless, if the OLM V4 is used along with OLM V3 G11-1300 and G12-1300 devices,
the DIL switches S6 and S5 of the OLM V3 must be set to "0" to avoid interference due to
the internal design of the OLM V3 devices.
4.5

Mixed operation OLM V4 with OLM V2 (SINEC L2FO)

If OLM V4 modules are used along with OLM V2 (SINEC L2FO) modules, the bus
terminating resistors for the second RS-485 port must be activated on the OLM V2 if this port
is not used. To do this, turn on DIL switches S3 and S4 (termination).
Optical channels of the OLM / P V2 connected to optical channels of an OLM / P V4.1 must
be operated with a higher transmit power. To do this, set the DIL switch of the channels
involved on the OLM / P V2 to "1": S5 for channel 3 and S6 for channel 4. Set the transmit
power of the OLM / P V4.1 according to the cable length being used, see Section "Reducing
optical transmit power (Page 27)".
30
Operating Instructions, 01/2020, C79000-G8976-C270-06
Optical link module