Operator control (hardware)   
2.2 Display elements 
  SIMOTION C 
34  Operating Instructions, 02/2012 
2.2  Display elements 
LED displays 
The following LED displays are on the front panel of the SIMOTION C. This table describes 
the LEDs and their function.  
Table 2- 2  Status and error displays 
LED  Meaning 
SF (red)  This LED indicates a fault on the SIMOTION C.  
5 VDC (green)  This LED indicates that the power supply for the electronics is ready. 
RUN (green) - 
SIMOTION C in RUN mode 
This LED indicates that the user program is running. 
STOPU (yellow) - 
SIMOTION C in STOP user 
program mode 
This LED indicates that the technology packages (for example, 
synchronous operation and cam) are active. The user program is not 
active. 
STOP (yellow) - 
SIMOTION C in STOP mode 
This LED indicates that no user program is running. The technology 
packages are not active. 
BUS1F (red) -  
Group fault 
This LED indicates a fault on the SIMOTION C PROFIBUS DP1 
interface (X8). 
BUS2F (red) -  
Group fault 
This LED indicates a fault on the SIMOTION C PROFIBUS DP2/MPI 
interface (X9). 
Q0 to Q7 , I0 to I11 , 
B1 to B4, M1, M2 (green) -  
Digital inputs/digital outputs 
These LEDs show the status of the digital inputs/outputs. 
 
The following LED displays are arranged the front cover of the SIMOTION C240 PN. This 
table describes the LEDs and their function. 
Table 2- 3  Status and fault displays behind the front cover (C240 PN) 
LED  Meaning 
Ethernet link (X7) (green)  This LED indicates a physical connection of the Ethernet 
interface. 
Ethernet activity (X7) (yellow)  This LED indicates a data transfer via the Ethernet interface. 
PROFINET link (X11 Px) (green)  This LED indicates a physical connection of the PROFINET 
interface at port x. 
PROFINET activity (X11 Px) (yellow)  This LED indicates a data transfer via the PROFINET 
interface at port x. 
PROFINET fault (X11) (red)  This LED indicates a fault at the PROFINET interface. 
PROFINET sync (X11) (green)  This LED indicates synchronization status of the PROFINET 
interface. 
See also 
Diagnosis using the LEDs (Page 165)