7/25/2014 6:24 PM | |
Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating:
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Hello again, The new PPO that you try to use are longer than 4 bytes. And I suspect them to be decalred as"consistency over complete length". So you must access it "consistently", and not piece by piece. In my opinion, you have two possibilities: - either you configure the address range of the drive PPO to be part of the process image of the CPU (take a low start address) See why it could work here: http://support.automation.siemens.com/WW/view/en/8751062 - or you use SFC14 and SFC15 to read the complete PPO at once. Principle around SFC14/SFC15 is explained here: http://support.automation.siemens.com/WW/view/en/21848242 Some general entry about consistency: http://support.automation.siemens.com/WW/view/en/28991143 |
Best regards |
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