2/8/2013 11:53 AM | |
Joined: 2/10/2012 Last visit: 9/18/2024 Posts: 314 Rating: (59) |
Indeed. That would be a very nice improvement! Now it's difficult to get consistent read and write data at primitive level (bit,byte,word,dword,qword). tip of Pegaia is the way to go and best practice: make cpy of the primitive when it's stable and then only once in the cycle. But: It's next to impossible to get consistency at longer datatypes. A buffer of 10 bytes can take as long as 10 cycles to xfer. Detecting consistency by last byte marker? Otherwise read back to confirm! I won't explain my hmi write logic to the beast. Pls, siemens! it's 2013! I tried disairt without succes. |
2/8/2013 12:17 PM | |
Posts: 25 Rating: (0) |
Isn't it a standard that a comm part of the cycle comes at the start, before scanning your I/O ? |
8/18/2014 10:33 AM | |
Joined: 9/1/2005 Last visit: 9/18/2024 Posts: 4104 Rating: (195) |
new question published by Sean Sadeghiis split to a seperate thread with the subject Replace CPU which is talking to HMI- MP 277 Best regards CS Moderator |
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