Article - CS433531
Write error: "<Channel.device> | Unable to write to address on device. | Address = '<address>', Reason = 'Device returned protocol error'. Error class = 0X81, Error code = 0X4" with Siemens TCP/IP Ethernet Driver in PTC Kepware Products
Modified: 03-Jan-2025
Applies To
- ThingWorx Kepware Server (legacy) 8.0 to 6.17
- Kepware Server (formerly KEPServerEX) 6.0.2107.0 to 6.17
Description
- Error in Event log: <Channel.device> | Unable to write to address on device. | Address = '<address>', Reason = 'Device returned protocol error'. Error class = 0X81, Error code = 0X4
- Write errors using the CPU S7-1500 models 1510SP-1 and 1515-2
This is a printer-friendly version of Article 433531 and may be out of date. For the latest version click CS433531