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Entry type: Product note Entry ID: 4130454, Entry date: 08/27/1996
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CPU 948 - New Revision Level A03

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  • Associated product(s)
                                                                            

                                                                            

Concerns products with the Catalog Nos.:                                    

                                                                            

6ES5 948-3UA11    CPU 948 for S5-155U                                       

6ES5 948-3UA21    CPU 948 for S5-155U                                       

6ES5 998-3PR11    Programming Instructions for CPU 948                      

                                                                            

                                                                            

                                                                            

_Reason for the change:_                                                    

                                                                            

A functional improvement of the OB180 and an error correction.              

                                                                            

_Improvement:_                                                              

                                                                            

The OB180 permits variable data block access from revision level            

A03 onward.                                                                 

                                                                            

This means that the OB180 can be used to shift an access window             

of 256 DW in a 16-word grid across a data block.                            

                                                                            

Please note that in contrast to OB180 of the CPU 928B, the                  

CPU 948 only permits shifts of the access window in multiples of            

16, because paragraph addresses in the case of the CPU 948 are              

structured differently.                                                     

                                                                            

_Example:_                                                                  

                                                                            

C   DB 17    open DB 17                                                     

L   KB 32    DB offset: 32 DW                                               

JU  OB 180   call                                                           

                                                                            

The data word originally at DW 280 can now be accessed at DW 248.           

                                                                            

The new function is described in the Programming Guide of the               

CPU 948 (6ES5 998-3PR21, from A03 onward).                                  

                                                                            

_Error corrections:_                                                        

                                                                            

When transferring blocks in the CPU 948, bytes of a word would              

possibly be mixed. This problem was observed when the block                 

length was n x 256 + 4 (including block header)                             

                                                                            

_Upgrading:_                                                                

                                                                            

Order a SIM 215 modification kit from your SIMATIC contact at               

your local Siemens office and replace 4 EPROMs of the operating             

system. Modification instructions are supplied with the kit.                

For your convenience please use the attached Order Form.                    

                                                                            

Kindly place your orders by June 1, 1995 at the latest.                     

                                                                            

                  ------------------------------                            

                                                                            

 Ordered by: **)                !                                           

                                !                                           

                                !                                           

_                              _!                                           

                                !                                           

_                              _!                                           

                                !                                           

_                              _!                                           

                                ! Delivery address                          

--------------------------------+(if different from your address)           

 To Siemens *)                  !                                           

_                              _!_                              _           

                                !                                           

_                              _!_                              _           

                                !                                           

_                              _!_                              _           

                                !                                           

_                              _!_                              _           

                                !                                           

                                                                            

                                                                            

                                                                            

We herewith order the following modification kits:                          

                                                                            

  SIM 215              ! Our Ref. No.  !  Remarks     ! Quantity!           

 _Modification Kit_    +---------------+--------------+---------+           

  for CPU 948          !               !              !         !           

  6ES5 948-3UA11 and   !               !              !         !           

  6ES5 948-3UA21       !               !              !         !           

                       +---------------+--------------+---------+           

                                             Please                         

_                                _           (x)   return                   

 Date           Signature                    ( )   discard                  

                                             the replaced items             

-----------------------------------------------------------------           

To be completed by Siemens                                                  

+==================================+============================+           

# Order No.                        #                            #           

+==================================+                            #           

# Orders without Order Nos. cannot be processed.                #           

#  +--------------------------+  +----------------------------+ #           

#  ! To                       !  ! from ZN/LG:                ! #           

#  ! EWK FP 33                !  !                            ! #           

#  ! Aenderungsdienst         !  !                            ! #           

#  !                          !  !                            ! #           

#  !                          !  !                            ! #           

#  !                          !  !                            ! #           

#  !                          !  !                            ! #           

#  !                          !  !                            ! #           

#  +--------------------------+  +----------------------------+ #           

#                                                               #           

#  _                                _                           #           

#   Date           Signature                                    #           

+===============================================================+           

          *) Your SIMATIC contact at your local Siemens office              

         **) Your address                                                   





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