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Entry type: Product note Entry ID: 4126501, Entry date: 08/27/1996
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S5-115U with CPU 944 and ET 200 - Product Information

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  • Associated product(s)
                                                                            

                                                                            

Concerns products with the Catalog Nos.:                                    

                                                                            

6ES5 944-7UA12   CPU 944 for S5-115 with 1 serial port                      

6ES5 944-7UA22   CPU 944 for S5-115 with 2 serial ports                     

6ES5 944-7UB11   CPU 944B for S5-115 96Kbyte with 1 serial port             

6ES5 944-7UA21   CPU 944B for S5-115 96Kbyte with 2 serial ports            

6ES5 308-3UB11   IM 308 master interface module for ET 200                  

6ES5 308-3UC11   IM 308-C master interface module for ET 200                

                                                                            

                                                                            

                                                                            

During the processing of analog values in the ET 200 system via             

the integrated function blocks of the CPU 944, the IM 308 will              

detect any inconsistency of data.                                           

                                                                            

In the case of the integrated FBs 250/251 the CPU 944 has a dif-            

ferent reading and writing access mode than the CPUs 941/942/943            

and 945. The IM 308B/C cannot detect this, resulting in a wrong             

sequence of access to the consistent area.                                  

                                                                            

The data exchange on the SINEC L2-DP bus is aborted and the out-            

puts of the slave stations are reset. In view of this, the use of           

the integrated FB 250/251 is no longer permitted for ET 200.                

                                                                            

Reading and outputting of analog values must be done by means               

of L PW and T PW operations.                                                

                                                                            

                                                                            

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