Siemens sinamics dcp - 7.5.2 PROFIBUS connection

Operation
7.5 Communication via PROFIBUS DP
SINAMICS DCP
Operating Instructions, 09/2019, A5E34382853K
223
7.5.2 PROFIBUS connection
WARNING
Electric shock when connecting with voltage present
When connecting the PROFIBUS cable with voltage present, there is a danger of coming
into contact with live components behind the connection point.
Touching live components can result in death or serious injury.
• Only connect the PROFIBUS cable to connector X126 when the unit is in a de-
energized state.
Position of PROFIBUS connection and diagnostics LEDs
The PROFIBUS connection and diagnostics LEDs are located on the Control Unit (CUD).
The PROFIBUS connection is via a 9-pin Sub-D socket (X126). The connections are
electrically isolated.
See also Chapter "Description of the LEDs on the CUD (Page 362)".
PROFIBUS connection
Table 7- 24 PROFIBUS connector assignment
Connector
X126
Pin
Signal name
Technical specifications
1
-
Not assigned
2
-
Not assigned
3
RxD/TxD-P
RS485 receive/transmit data P (B)
4
CNTR-P
Control signal (TTL)
5
DGND
PROFIBUS data ground
6
VP
Positive supply voltage (5 V +/-10%)
7
-
Not assigned
8
RxD/TxD-N
RS485 receive/transmit data N (A)
9 - Not assigned
Advanced CUD