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Entry type: Product note Entry ID: 4205275, Entry date: 12/17/1999

IM 308-C DP Interface Module - New Firmware V3.5, Revision Level A11

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Concerns the product with Order No.:                                        


6ES5 308-3UC11    IM 308-C master interface module                          



A new firmware version V3.5 is now available for the IM 308-C. The revision 

level of the module has been incremented to A11.                            


The following problem has been corrected:                                   


The following response occurred with revision levels A4 and higher (firmware

version V2.1) and only if the slaves were operated with or without short    

consistency: After a RUN-STOP transition and subsequent overall reset of the

CPU the outputs of the slaves would be set to the old values at the next    

transition of the CPU from STOP to RUN. This response has been corrected    

with the new revision level A11.                                            


When the CPU now changes from RUN to STOP, the outputs of all DP slaves     

operated with or without short consistency will be reset.                   




IM 308-C modules with revision level A6 and higher can be upgraded on site. 

The new firmware can be downloaded as IMC_V350.LFW file from the Internet,  

right here under the ID No. 1657050 in the area Decentralized I/Os.  Loading

of the firmware to the IM 308-C is described in the manual "ET 200 Distribu-

ted I/O System".                                                            


IM 308-C modules with revision level A5 and lower must be returned to the   

factory for upgrading. Please speak to your SIMATIC contact at your local   

Siemens office.                                                             




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