Interrupts/diagnostic messages   
6.1 Status and error displays 
  Technology module TM ECC 2xPWM ST (6FE1242-6TM10-0BB1) 
48  Manual, 04/2018, A5E42681298B-AA 
 
To remove and prevent errors 
 
Off  
Backplane bus supply of the ET 200SP not OK  Check and switch on supply voltage of 
the head-end station. Make sure that 
the SIMATIC ET 200SP TM ECC 
2xPWM ST technology module in in-
serted correctly into the BaseUnit. 
 
Technology module not parameterized  Download a configuration that contains 
the technology module.  
 
On  
Technology module configured but no module 
diagnostics (no error present) 
 
 
Flashing  
Technology module configured and module 
diagnostics (at least one error present) 
Check the configuration and parameter 
assignment in your engineering tool 
(e.g. TIA Portal) or evaluate the diag-
nostic interrupts and remedy the error. 
 
 
Note 
The DIAG LED only shows an error when you 
have enabled the corresponding diagnostic 
interrupt in the device configuration. By default, it is not enabled.
 
 
To remove and prevent errors 
 
Off 
No supply voltage L+ 
•  BU type B1:  
Check the external 24 V DC supply 
voltage between L+ and M. 
•  BU type B0:  
Check the 24 V DC supply voltage 
of the supplying potential group. 
 
Supply voltage L+ present