Cable specification
For PROFINET, you always require a data transmission rate of 100 Mbit/s (Fast Ethernet) in full
duplex mode. For data transfer purposes, you can use twisted-pair copper cables (4-wire,
100Base-T).
Table 8-13
Cable specification for X150 ports 1, 2
Characteristic
Version
Connector type
RJ45 socket
Cable type
Industrial Ethernet cable (as of CAT5)
Max. cable length
100 m
8.9
PROFIBUS DP
8.9.1
Application
Connectable devices
The following devices can be connected to the PROFIBUS DP interfaces:
• Distributed I/O
• Drive units with PROFIBUS DP interface (standard slaves)
• S7 controls with PROFIBUS DP interface
• PG/PC
Properties
• Isolated RS 485 interface
• Max. data rate 12 Mbits/s
• Supports master/slave operation
• PROFIBUS address is set via configuration
X126 pin assignment
Pin
Signal name
Signal type Meaning
1
-
-
Reserved, do not use
2
M
VO
Ground to P24_SERV
3
1RS_DP
B
RS-485 differential signal
4
1RTS_DP
O
Request to send
5
M5EXT
VO
Ground to P5EXT
Connecting
8.9 PROFIBUS DP
NCU 1740
Equipment Manual, 10/2021, A5E51087503B AA
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