Siemens EF 83H Series Manual do Utilizador descarregar pdf (Página 51)

Connecting the Network

3-13

SIMATIC 505 PROFIBUS-FMS CP User Manual

5. Remove

0.25 inches (6 mm) of insulation at the wire ends.

Insert the signal wires into the cable terminals.

Be sure to connect the same wire color to the TX/RX+ pin for every

device throughout your system. Crossing the wires at any point creates

communications problems.

Set the termination switch to the correct position. See Figure 3-10.

Switch

position ON

(termination and

bias enabled).

ABAB

OFF

Switch position OFF

(termination and

bias disabled).

ABAB

OFF

Attaching connector at segment end

B. Attaching connector to midpoint of segment

Figure 3-10 Attaching

Connector and Selecting T

ermination

Put the cover back on the connector housing.

Be sure that the bare cable shielding makes contact with the metal

cable guide on the connector

, to ensure proper grounding for the

connection.

9. T

ighten the connector housing screws to a maximum torque of 8 in-lb

(0.9 N-m) in order to ensure a good connection.

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Siemens EF 83H Series Manual do Utilizador Página 51