Справочник Пользователя для Siemens ST PCS 7

PROFIBUS PA

Siemens ST PCS 7 · November 2007

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Connection for PROFIBUS PA

• DP/PA coupler Ex [i]

2 terminals of a 4-pole screw-type 

terminal, integral terminating 

resistor

• DP/PA coupler FDC 157-0

4-pole screw-type terminal for 

connection and looping through, 

selectable terminating resistor

Connection for PROFIBUS DP

9-pin Sub-D plug,

contact assignment as described 

in IEC 61158/EN 50170

Backplane bus

Connection through S7 back-

plane bus connector (only neces-

sary for DP/PA link); non-floating
The active BM DP/PA bus mod-

ules are required for the hot 

swapping function

Diagnostic displays

• DP/PA coupler Ex [i] and 

DP/PA coupler FDC 157-0

Bus activity "DP" (yellow)

Bus activity "PA" (yellow)

24 V DC "ON" (green)

• Additive with DP/PA coupler 

FDC 157-0

Group fault "SF" (red)

Bus fault "BF" (rot)

DP/PA coupler activated, feed-

ing/transmitting "ACT" (yellow), 

only with PA redundancy

Power supply

24 V DC (20.4 V ... 28.8 V)

Current consumption

• DP/PA coupler Ex [i]

Max. 400 mA

• DP/PA coupler FDC 157-0

Max. 2300 mA

Voltage at coupler output

• DP/PA coupler Ex [i]

13 V ... 14 V DC

• DP/PA coupler FDC 157-0

31

±

1 V  DC

Max. current at coupler output

• DP/PA coupler Ex [i]

110 mA

• DP/PA coupler FDC 157-0

1 A (up to 50 °C), 0.8 A (up to 

60 °C)

Power loss

• DP/PA coupler Ex [i]

Approx. 7 W

• DP/PA coupler FDC 157-0

Approx. 13.4 W

Operating temperature

• DP/PA coupler Ex [i] and 

DP/PA coupler FDC 157-0

-25 ... +60 °C 

(horizontal installation)

-25 ... +40 °C (vertical installation)

Dimensions (W x H x D) in mm

80 x 125 x 130

Weight

Approx. 515 g

Function

Linking of PROFIBUS DP 

(9.6 kbit/s to 12 Mbit/s, slave 

functionality) and PROFIBUS PA 

with support of the "Configuration 

in Run" function
The DP/PA link function is only 

implemented by extending the 

IM 153-2 High Feature with one or 

more DP/PA couplers. Stand-

alone operation of the IM 153-2 

High Feature is not possible.
1 Y coupler, up to 

5 DP/PA couplers or up to 

64 slaves can be connected
Isolation from the higher-level DP 

master system

Interfaces

• Connection for PROFIBUS DP

9-pin Sub-D plug, contact assign-

ment as described in 

IEC 61158/EN 50170, Vol. 2

• Backplane bus

Connection through S7 back-

plane bus connector, non-floating
Bus modules and profile rails for 

hot swapping are required for the 

hot swapping function and for a 

redundant PROFIBUS DP inter-

face module.

Diagnostic displays

Group fault "SF" (red)

Bus fault DP "BF 1" (red)

Bus fault PA "BF 2" (red)

IM active "ACT" (yellow)

24 V DC "ON" (green)

Power supply

24 V DC

Current consumption

Max. 100 mA (in DP/PA link)

Max. 200 mA (in Y-link)

Power loss

Approx. 2 W (in DP/PA link)

Approx. 4 W (in Y-link)

Voltage failure bridging

20 ms

Mechanical design of power 

supply

4-pin screw terminal, short-

circuiting link between PE and 

M24; the short-circuiting link must 

be removed for floating operation 

(independent of this, the DP inter-

face is always floating)

Permissible operating temperature

-25 ... +60 °C 

(horizontal installation)

-25 ... +40 °C (vertical installation)

Dimensions (W x H x D) in mm

40 x 125 x 130

Weight

Approx. 350 g

© Siemens AG 2007