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6/3/2012 12:45 PM | |
Posts: 34 Rating: (0) |
Dear Sir, I am Commissioning S7400H system with CPU 6ES7412-3HJ40-0AB0-V4.5.5on Switched I/O Configuration. My self finding problem in I/O redundancy switch over, i,e outputs values are not retainded, when main IM rack DI Module front connector is disconnected from DI module. After downloading S7 program to CPU. I had removed DI module form IM rack. 1st time output values are retained with redudant IM DI module. When i am doing the samesecond time ( after 10min), output vaules are not retained. Error message and program backup attched. Please confirm any setting needs to be done in H/W configuration or and OB needs to be called additionally. Regards, Muthu AttachmentProgram and Error Screen.zip (81 Downloads) |
Last edited by: O_Moderator at: 6/6/2012 11:01 AM |
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6/7/2012 11:02 AM | |
Joined: 7/2/2008 Last visit: 3/18/2024 Posts: 928 Rating: (305) |
HelloMuthu, I have some remarks. 1- You shouldn't have used DB2. The FC450 RED_INIT creates redundant I/O management data blocks. These data blocks are given numbers 1&2 by default. If you want to change these numbers and keep your DB2 go in hardware configuration>CPU properties>H-Parameters and change Redundant I/O DB no. 2- Please call FC450 RED_INIT in OB80. 3- Please call FB452 RED_DIAG in OB72. 4- I recommend using FB453 RED_STATUS to evaluate status of redundant modules before doing any test. Best regards, H-H
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