Schneider Electric INTERBUS Basic Podręcznik Użytkownika Pobierz pdf (Strona 13)

Bulletin No. VVDED397053US Section 1—Hardware Set-Up

November 2000 Connections

Figure 5: Male and Female 9-pin SUB-D Connections

Standard RS-485 Bus

Use the following recommendations to construct a standard RS-485 bus:

• Use the Phoenix Contact cable (reference IBS RCBxxxM, where

xxx = length of cable in meters).

• Maximum length of line: 42,640 ft (13,000 m).

• Maximum length of drop cable: 1,312 ft (400 m).

• Do not connect more than 256 devices to one bus.

• When routing cable, keep the bus away from the power cables (at least

12 in [30.5 cm]), and make any crossovers at right angles.

Table 5: Female 9-pin SUB-D Connector Pin (Output) on the Card

Pin Signal Pin Signal Pin Signal

1DO24

Connection

7DI2/

2DI25VCCO8

Connection

3 GNDO 6 DO2/ 9 RBST

Male Female

123

678

321

876

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Schneider Electric INTERBUS Basic Podręcznik Użytkownika Strona 13