Setting Compatibility, Operating Mode And Transmitting Power; Setting The Compatibility - Siemens SIMATIC NET PROFIBUS Owner's Manual

4 Setting Up

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).
0 1
DIL switch S7 (compatibility) in Position 0:
S 7
S 6
compatibility to SINEC L2FO OLM/P3, -P4, -S3, -S4, -S3-1300, -S4-1300 switched off
S 5
S 4
S 3
S 2
S 1
S 0
0 1
DIL switch S7 (compatibility) in Position 1:
S 7
S 6
compatibility to SINEC L2FO OLM/P3, -P4, -S3, -S4, -S3-1300, -S4-1300 switched on
S 5
S 4
S 3
S 2
S 1
S 0
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
OLM/P3 und OLM/P4:
SINEC L2FO
OLM/P3; OLM/P4
S7 = 1 Compatibility Mode ON
S0 Reserved
S1 Mode Monitor
0 Line/Ring On
1 Line Off
S2 Redundancy
0 Off
1 On
S3,S4 Reserved
S5 Output Power CH3
0 Standard
1 High
S6 Output Power CH4
0 Standard
1 High
OLM/P3: S6 reserved
Version 1.0 8/00
4.3 Setting compatibility, operating mode and transmitting power
OLM/S3, OLM/S4,
OLM/S3-1300 und
OLM/S4-1300:
SINEC L2FO
OLM/S3; OLM/S4;
OLM/S3-1300; OLM/S4-1300
S7 = 1 Compatibility Mode ON
S0 Reserved
S1 Mode Monitor
0 Line/Ring On
1 Line Off
S2 Redundancy
0 Off
1 On
S3 Distance
0 Extended
1 Standard
S4,S5,S6 Reserved
OLM/S3, OLM/S3-1300:
S2 reserved
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.
17