Connection 
  5.2 Signaling contact 
SCALANCE X-200 
Compact Operating Instructions, 12/2010, A5E00813159-11 
83 
5.2  Signaling contact 
Signaling contact 
The signaling contact (relay contact) is a floating switch with which error/fault states can be 
signaled by breaking the contact. 
The signaling contact is connected to a 2-pin plug-in terminal block.  
Exception: 
The signaling contact on the SCALANCE X204 IRT PRO and SCALANCE X202-2P IRT 
PRO is connected using a 5-pin b-coded M12 socket. 
 
IE Switches X-200  SCALANCE X204 IRT PRO, 
SCALANCE X202-2P IRT PRO, 
SCALANCE X201-3P IRT PRO 
Pin number  Assignment  Pin number  Assignment 
 
 
 
 
Pin 1  F1  Pin 1  F1 
Pin 2  F2  Pin 2  n. c. 
-  -  Pin 3  n. c. 
-  -  Pin 4  F2 
-  -  Pin 5  n. c. 
The following errors/faults can be signaled by the signaling contact: 
●  The loss and the establishment of a link on a monitored port. 
●  The failure of one of the two redundant power supplies. 
●  The loss of the connection to the controller in PROFINET IO mode. 
●  The redundancy manager signals an error 
 
 
Note 
SCALANCE X204 IRT PRO, SCALANCE X202-2P IRT PRO and SCALANCE X201-3P 
IRT PRO have no redundant power supply 
●  Incompatible C-PLUG was inserted.