技術文章 - CS278651
Siemens device returning protocol reading error code [0xA] or [Class=0x81, Code=0x04] in PTC Kepware Products
修改時間: 03-Jan-2025
套用到
- ThingWorx Kepware Server (legacy) 8.0 to 6.17
- Kepware Server (formerly KEPServerEX) 5.20.396.0 to 6.17
描述
- The Event Log displays error messages similar to:
- Unable to read # bytes starting at offset 0 for <requested tag> on device <channel.device>. Device returned protocol error [Class=0x81, Code=0x04]
- Siemens S7-1500 device returned error Data Access Error Code=0xA
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