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Version 1.0 8/00
4 Setting Up 4.3 Setting compatibility, operating mode and transmitting power
4.3 Setting compatibility, operating mode and transmitting power
Please note:
The OLM must be switched off when changing the operating mode.
You can switch off the OLM by, e.g., unplugging the 5-pin terminal block.
4.3.1 Setting the compatibility
The DIL switch S7 is used to switch the functional compatibility to devices of the preceding generation (SINEC L2FO
OLM/P3, -P4, -S3, -S4, S3-1300 and -S4-1300) either off or on. Default setting at S7 is Position 0 (compatibility is
switched off).
DIL switch S7 (compatibility) in Position 0:
compatibility to SINEC L2FO OLM/P3, -P4, -S3, -S4, -S3-1300, -S4-1300 switched off
DIL switch S7 (compatibility) in Position 1:
compatibility to SINEC L2FO OLM/P3, -P4, -S3, -S4, -S3-1300, -S4-1300 switched on
The functional compatibility to SINEC L2 Optical Link Modules of the preceding generation SINEC L2FO OLM/P3,
OLM/P4, OLM/S3, OLM/S4, OLM/S3-1300 and OLM/S4-1300 is switched on with the DIL switch S7=1.
This operating mode is required when operating this module together with new devices.
Only turn switch S7 to Position 1 if the PROFIBUS OLM is being used as a spare or expansion device in existing
networks in conjunction with OLMs of the preceding generation, and a direct optical connection is to be made.
The following illustrations show the switch assignment of the OLM at S7=1 for
Further information about adjusting the S7 in Position 1
can be found in the ”Description and Operating
Instructions SINEC L2 Optical Link Module OLM/P …,
OLM/S …“ for this SINEC L2 OLM.
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