PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
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PROFIBUS hardware installation<br />
B. PROFIBUS hardware installation<br />
B.1. PROFIBUS cable<br />
PROFIBUS standard EN 50 170, PROFIBUS, specifies two<br />
admissible cables to be used for the PROFIBUS-FMS and<br />
PROFIBUS-DP protocols.<br />
Both cable types are discussed below. We recommend using<br />
cable type A because it has advanced properties.<br />
B.1.1. Cable type A<br />
Cable type A recommends itself for high transfer speeds ( ><br />
500 kBaud).<br />
Technical data<br />
-- Char. impedance: 135...165 W<br />
(measuring frequency: 3 to 20 MHz)<br />
-- Cable capacity: < 30 pF per meter<br />
-- Wire diameter: > 0.34 mm², complying with AWG<br />
22<br />
-- Cable type: twisted pair,<br />
1 x 2-, 2 x 2- or 1 x 4-wire<br />
-- Loop resistance: < 110 W per km<br />
-- Signal attenuation: max. 9 dB across the entire length<br />
of the line section<br />
-- Shielding: copper mesh shield or mesh/foil<br />
shield<br />
B.1.1.1. Transfer speed and cable length<br />
Baud rate<br />
9.6<br />
19.<br />
2 93.75<br />
187.<br />
5 500<br />
1500<br />
3000<br />
6000<br />
12000<br />
[kbit/s]<br />
Cable<br />
1200<br />
1200<br />
1200<br />
1000<br />
400<br />
200<br />
100<br />
100<br />
100<br />
length [m]<br />
See next page for information on branch lines<br />
B - 1
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