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12/28/2010 9:31 AM | |
Posts: 1 Rating: (0) |
Could you explain to me how did you use sfb53, please ? Expecially in order to change the parameter |
12/28/2010 11:09 AM | |
Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181) |
Hello, System functions and blocks SFB52 "RDREC" / SFC59 "RD_REC" (read record) are used to read data records of a component (module) of a DP slave/PROFINET IO device. System functions and blocks SFB53 "WRREC" / SFC58 "WR_REC" (write record) are used to write data records to a component (module) of a DP slave/PROFINET IO device. For SINAMICS, the system functions SFC58 / SFC59 and the system function blocks SFB52 / SFB 53 can be used for acyclic data transfer (DS47). There have 2 sample projects. Look at How do I control a G120 using the system functions SFC58 and SFC59? and How can I use SFC58 and SFC59 to read parameters from my G120? |
1/4/2011 12:19 AM | |
Joined: 10/7/2005 Last visit: 9/22/2024 Posts: 3021 Rating: (1054) |
Hello valter To start with, acyclic comms are by their very own nature not deterministic and repsonse times can in general vary. Having said that, they seem to vary a lot in your case and I wonder if managed to capture any error information from the SFB's Status output. Just in case you would get an "error" Status value of 80B5 hex you may find THIS thread helpful and it also wouldn't hurt to check the firmware of your Sinamics and update it to the latest (older FW's had "issues" with timely repsonses to DS47 related Parameter read/write requests). I hope this helps |
Cheers |
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