Siemens EF 83H Series Manual de usuario descargar pdf (Pagina 46)

Connecting the Network

3-8

SIMATIC 505 PROFIBUS-FMS CP User Manual

Installing PROFIBUS Cables (continued)

able 3-1

lists the PROFIBUS EN 50 170 cable line specifications.

able 3-1

PROFIBUS Cable Specifications

Feature Specification

Impedance 135 Ohm to 165 Ohm

(3 MHz to 20 MHz)

Capacitance

9.1 pF/ft. (<30 nF/km)

Resistance

33.5



/1000 ft.

(<1

10 Ohm/km)

Attenuation

0.27 dB/100 ft.

(0.9 dB/100 m (f=200kHz))

Conductor Area

20 A

WG to 22 AWG

(0.3 mm

to 0.5 mm

)

Cable Diameter

0.315 in.



0.02 in.

(8 mm



0.5 mm)

to 10 bus segments can be connected in series. Line length limits are

determined by baud rate. The distance between the two most widely

separated stations must not exceed the values shown in T

able 3-2. Use

repeaters between each cable segment. (For fiber

-optic cable line length

limits, consult the newest edition of Siemens’

SIMA

TIC NET Industrial

Communications Networks, Catalog IK 10

able 3-2

PROFIBUS Line Length Limits

Baud Rate

Maximum Segment

Length

Maximum Installation

Length

9.6

to 93.75 KBaud

3,930 ft. (1,200 m)

39,300 ft. (12,000 m)

187.5 KBaud

3,280 ft. (1,000 m)

32,800 ft. (10,000 m)

500 KBaud

1,310 ft. (400 m)

13,100 ft. (4,000 m)

1.5 MBaud

660 ft. (200 m)

6,600 ft. (2,000 m)

3 Mbaud to 12 MBaud

330 ft. (100 m)

3,300 ft. (1,000 m)

PROFIBUS

Cable

Specifications

PROFIBUS Line

Length Limits

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 186 187

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Siemens EF 83H Series Manual de usuario Pagina 46

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