User`s manual

2-4 Series 90™-30 CPU with Embedded PROFIBUS Interface – November 2004 GFK-2334A

Line Types

Baud Rate Line A

Distance (Max)

1, 2

Line B

Distance (Max)

1, 2

Glass Fiber

9.6 kBit/s, 19.2 kBit/s and 93.75kBit/s 1200 m 1200 m 6 km

187.5 kBit/s 1000 m 600 m 6 km

500 kBit/s 400 m 200 m 6 km

1.5 MBit/s 200 m NA 6 km

3 MBit/s, 6 MBit/s and 12 MBit/s 100 m NA 6 km

If using a combination of both line types, divide the lengths shown by two.

Values shown are the sum of all bus segments and drop cable lengths.

NA = Not Applicable

Termination Note: The two physical ends of the PROFIBUS network must be

terminated. There should be two, and only two, terminators on a

network.

PROFIBUS Cable Types

The recommended cable is:

 Belden 3079A PROFIBUS cable

This is a shielded, 150 Ohms twin-axial (single twisted pair) cable. It has 0.66 mm

conductor diameter and a mutual capacitance of 28 pF/m, nominal. For complete

specifications on this cable, please contact your Belden dealer or visit their website at

www.belden.com

Alternate cable types are:

 Siemens 6XV1 830-OAH10 Two Core shielded

 Siemens 6XV1 830-OBH10 w/PE Sheath

 Siemens 6XV1 830-3AH10 for underground burial

 Siemens 6XV1 830-3BH10 trailing cable

 Bosch Comnet DP #913 548 Flexible PROFIBUS cable

 Bosch Comnet DP #917 201 Trailing PROFIBUS Cable

 Bosch Comnet DP #917 202 Massive PROFIBUS Cable

Notes: Allen Bradley “blue hose”, which has an impedance of 78 Ohms, is not

recommended for this application.

Cable type B should not be used with this product.

Cable Specifications

Cable Parameter Type A Type B

Impedance 135 to 165 Ohms at f = 3 to 20 MHz 100 to 130 Ohms at f > 100 kHz

Capacitance < 30 pF/m < 60 pF/m

Resistance < 110 Ohms/km -

Core Diameter > 0.64 mm -

Conductor Area > 0.34 mm

(22 AWG) 0.22 mm

(24 AWG)