Siemens SIMATIC NET PROFIBUS Provozní pokyny stáhnout pdf (Strana 28)

Product Characteristics

4.2 Installation

SIMATIC NET PROFIBUS Optical Link Module OLM V4.0

22 Operating Instructions, 01/2013, C79000-G8976-C270-03

4.2.2 General information on commissioning

Unpack the OLM V4.0 and its accessories and check that the consignment is complete and

that there has been no damage during transportation. After unpacking, the device should be

acclimatized for some time to avoid condensation after to storage in cold surroundings.

First choose the network topology suitable for your requirements. Commissioning of the

modules then involves the following steps:

 Checking and, if necessary, setting of the DIL switches.

 Installation of the modules.

 Connection of the power supply and, if required, connection of the signaling contacts.

 Connection of the RS-485 bus line with installed bus connectors (if you use a bus

topology, remember that the terminating resistors in the connectors at both ends of the

line must be activated).

 Connection of the optical bus lines.

Figure 4-1 View of the OLM from the top

Position of the DIL switches and of the terminal block for the power supply/signaling contacts/level

measurement. The figure shows the factory default setting of the DIL switches (switches S0, S1, S2, S3,

S4, S7 and S8 in position “0”, switches S5 and S6 in position “1”).

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Siemens SIMATIC NET PROFIBUS Provozní pokyny Strana 28