4
Installation notes
MOVI-C® CONTROLLER power UHX85A – P / power eco UHX84A–P
Manual – MOVI-C
®
CONTROLLER
22
4.2.2 Connecting the PROFIBUS connector (X24)
Connection to the PROFIBUS system is implemented using a 9-pin D-sub connector
in compliance with 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 X24 of the controller.
3
1
5
6
9
8
4
5
6
9
RxD/TxD-P
RxD/TxD-N
CNTR-P
DGND(M5V)
VP (P5V/100mA)
DGND(M5V)
[1]
[2]
[3]
155128331
[1] 9-pin D-sub connector
[2] Signal line, twisted
[3] Conductive connection over a large area between connector housing and shield
Connection of controller and PROFIBUS
The controller is usually connected to the PROFIBUS system using a shielded twisted
pair cable. Observe the maximum supported transmission rate when selecting the bus
connector.
The twisted-pair cable is connected to the PROFIBUS connector at 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 pins in all
PROFIBUS stations. Otherwise, the bus components cannot communicate via
PROFIBUS.
The PROFIBUS interface sends a TTL control signal for a repeater or fiber optic ad-
apter (reference = pin 9) via pin 4 (CNTR-P).
Baud rates greater than 1.5 MBaud
The controller with baud rates > 1.5 MBaud can only be operated with special 12-
MBaud PROFIBUS connectors.
Bus termination
When the controller is located at the start or end of a PROFIBUS segment and when
there is only one PROFIBUS cable connected to the controller, then you have to use a
connector with an integrated bus terminating resistor.
Switch on the bus terminating resistors for this PROFIBUS connector.
4.2.3 Status LEDs
Four two-color LEDs are available for diagnostics that indicate the present state of the
PROFIBUS system.
Status LED "25.3" (COM)
Signals proper communication via PROFIBUS interface.
22781455/EN – 05/2016
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