Technical data

24
Manual – MOVI-PLC® advanced DH.41B Controller
3
Installing the MOVI-PLC® advanced DHF41B control card
Assembly / Installation Notes
3.4.2 PROFIBUS connection (terminal X30P)
Connection to the PROFIBUS system takes place using a 9-pin sub D plug according to
IEC 61158. The T-bus connection must be made using a plug with the corresponding
configuration. The following figure shows the PROFIBUS connector that is connected to
X30P on the MOVI-PLC
®
advanced DHF41B control card.
Connecting
MOVI-PLC
®
/
PROFIBUS
As a rule, the MOVI-PLC
®
advanced DHF41B control card is connected to the
PROFIBUS system using a shielded twisted-pair cable. Observe the maximum support-
ed transmission rate when selecting the bus connector.
The twisted-pair cable is connected to the PROFIBUS connector using pins 3
(RxD/TxD-P) and 8 (RxD/TxD-N). Communication takes place using these two pins. The
RS485 signals RxD/TxD-P and RxD/TxD-N must be connected to the same contacts in
all PROFIBUS stations. Otherwise the bus components cannot communicate via the
bus medium.
The PROFIBUS interface sends a TTL control signal for a repeater or fiber optic adapter
(reference = pin 9) via pin 4 (CNTR-P).
Baud rates
greater than 1.5
MBaud
The MOVI-PLC
®
advanced DHF41B control card with baud rates > 1.5 MBaud can only
be operated with special 12-MBaud PROFIBUS connectors.
Bus terminator The MOVI-PLC
®
advanced DHF41B control card is not provided with bus terminating
resistors. This enables the PROFIBUS system to be taken into operation more easily
and reduces the number of error sources during installation.
If the MOVI-PLC
®
advanced DHF41B control card is located at the start or end of a
PROFIBUS segment and only one PROFIBUS cable leads into the MOVI-PLC
®
advanced DHF41B control card, you must use a connector with an integrated bus
terminating resistor.
Switch on the bus terminating resistors for this PROFIBUS connector.
Setting the
station address
The PROFIBUS station address is set using DIP switches 2
0
... 2
6
on the MOVI-PLC
®
advanced DHF41B control card.
61766AXX
Figure 7: Assignment of 9-pin sub D connector to IEC 61158
[1] 9-pin sub D connector
[2] Signal line, twisted
[3] Conductive connection over a large area is necessary between plug housing and
the shield
RxD/TxD-P
3
1
5
9
6
8
4
5
6
9
VP (P5V/100mA)
DGND (M5V)
DGND (M5V)
CNTR-P
RxD/TxD-N
[3]
[1]
[2]