Siemens Industry Online Support
Siemens AG
Entry type: Product note Entry ID: 4168423, Entry date: 08/27/1996

Problems with the 6ES5 355-3UA11 Memory Module

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  • Associated product(s)


Concerns products with the Order Nos.:                                      


6ES5 355-3UA11    355 Memory module for S5-155U                             

6ES5 155-3UA11    S5-155U Central controller                                

6ES5 155-3UA21    S5-155U Central controller                                

6ES5 946-3UA21    CPU 946 for S5-155U (multi-processor version)             

6ES5 946-3UR11    CPU 946 for S5-155H                                       




Some of the 355 memory modules shipped since July, 1990 cause               

a hard STOP of the CPU 946/947 during startup (System Fault LED             

on CPU 946 lights up).                                                      


Please return any affected memory modules to your local Siemens             

office for repair.                                                          




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