English (GB)
7
5. PROFIBUS DP, CIM 150 setup
5.1 PROFIBUS bus topology
The PROFIBUS-preferred bus topology is daisy chaining as
illustrated in fig. 7. The end devices of a physical bus segment
must be terminated (LT = Line Termination). Each device must
have a unique physical address [1-126]. Up to 32 PROFIBUS
devices can be connected to a bus segment, and by using a
repeater another 32 devices can be connected. This can be
repeated until the maximum number of addresses are used. Make
sure that each device is connected to a proper earth potential.
Fig. 7 Example of PROFIBUS bus segment with line
termination
5.2 CIM 150 PROFIBUS module
Fig. 8 CIM 150 PROFIBUS module
5.3 Connecting the PROFIBUS
5.3.1 Data transmission rates and cable length
We recommend using a cable according to IEC 61158.
Example
Siemens, 6XV1 830-0EH10.
Fitting the cable
See fig. 9.
1. Connect the red conductor(s) to terminal B (pos. 1).
2. Connect the green conductor(s) to terminal A (pos. 2).
3. Connect the cable screens to earth via the earth clamp (pos.
3).
Fig. 9 Connecting the PROFIBUS
TM04 9635 4810TM04 1699 0908
Pos. Designation Description
1 B (RxD/TxD-P)
PROFIBUS terminal B, positive data
signal
2 A (RxD/TxD-N)
PROFIBUS terminal A, negative data
signal
3DGND
PROFIBUS terminal DGND, only for
external termination
4 VP +5 VDC, only for external termination
5SW1/SW2
On and off switches for termination
resistors
6LED1
Red and green status LED for
PROFIBUS communication
7LED2
Red and green status LED for
GENIbus communication between
CIM/CIU 150 and the Grundfos
product
8SW3
Hexadecimal rotary switch for setting
the PROFIBUS address, four most
significant bits
9SW4
Hexadecimal rotary switch for setting
the PROFIBUS address, four least
significant bits
The power supply (pos. 4, fig. 8) must only be used
for external termination.
LT LT
Master
Slave
Slave
Slave
kbits/s
Maximum cable length
[m/ft]
9.6 1200/4000
19.2 1200/4000
45.45 1200/4000
93.75 1000/3300
187.5 1000/3300
500 400/1300
1500 200/660
3000 100/330
6000 100/330
12000 100/330
For maximum safety and reliability, connect the cable
screen to earth via the earth clamp, and make sure
that all CIU 150 units are properly earthed via the
mains supply earth-wire.
TM04 1700 0908
Pos. Description
1PROFIBUS terminal B
2PROFIBUS terminal A
3 Earth clamp
4+5 VDC
5DGND
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