Connecting 
  5.2 Networking 
SIMOTION C 
Operating Instructions, 02/2012 
127 
Unplugging a bus connector 
You can unplug a bus connector with a looped-through bus cable at any time from the 
PROFIBUS DP interface without interrupting data exchange on the bus.   
 
WARNING 
 
Data traffic error might occur on the bus! 
A bus segment must always be terminated at both ends with the terminating resistor. This 
is not the case if the last bus connector node is de-energized, for example. Because the 
bus connector takes its voltage from the station, this terminating resistor is ineffective. 
Please make sure that power is always supplied to stations on which the terminating 
resistor is active. 
 
5.2.4  Configuring an Ethernet subnet on the Ethernet interface 
Overview 
You can connect an Industrial Ethernet to the 8-pin RJ45 X7 socket, see Figure "Overview of 
the cable connecting the SIMOTION C to the servo drive (digital connection) - example" in 
chapter Overview of wiring diagram (Page 94).  
Industri
al Ethernet is a communication network with a transmission rate of 10/100 Mbits/s. 
Communication between SIMOTION C, the PG/PC (e.g. STEP 7, SIMOTION SCOUT, 
SIMATIC NET OPC), and the I/O devices provided for this purpose is supported by the 
Ethernet. 
A shielded twisted pair cable is used for the networking in this case. For additional 
information, refer to the 
SIMATIC NET, Industrial Twisted Pair and Fiber Optic Networks
 
Manual. This document is supplied in electronic format with SIMOTION SCOUT. 
The following connecting cables are recommended: 
●  SIMATIC NET, Ind. Ethernet TP XP CORD RJ45/RJ45, TP cable assembled with 2 RJ45 
plugs, send and receive cables crossed 
Order no.: 6XV1870-3R☐☐☐ (☐☐☐ - length code) 
●  SIMATIC NET, Ind. Ethernet TP CORD RJ45/RJ45, TP cable assembled with 2 RJ45 
plugs 
Order no.: 6XV1870-3Q☐☐☐ (☐☐☐ - length code) 
You can obtain additional information about the different cable systems for Ethernet from 
your SIEMENS contact. 
 
 
Note 
A crossover cable should be used for the direct connection of the controller to a PG/PC.