Siemens SIMATIC NET PROFIBUS Setting the compatibility, DIL switch S7 compatibility in Position

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).

0 1

S7

S6

S5

S4

S3

S2

S1

S0

0 1

S7

S6

S5

S4

S3

S2

S1

S0

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

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

0Off

1On

S3,S4 Reserved

S5 Output Power CH3

0Standard

1High

S6 Output Power CH4

0Standard

1High

OLM/P3: S6 reserved

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

0Off

1On

S3 Distance

0Extended

1Standard

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.

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