Article - CS299224
Modbus device readings show wrong values in PTC Kepware Products
Modified: 04-May-2026
Applies To
- Kepware Server (formerly KEPServerEX) 5.20.396.0 to 7.0
- ThingWorx Kepware Server (legacy) 8.0 to 6.18
Description
- Modbus device readings show wrong values in KEPServerEX / ThingWorx Industrial Connectivity / ThingWorx Kepware Server
- Read value with more than 16 bit word or dword shows wrong result
- How to swap word order in float reading
- Getting wrong value while reading Modbus device in Kepware
- Modbus TCP/IP Ethernet register shows different value than expected
- Modbus shows different values in QuickClient than expected
- How does one change the byte swapping and endianness of a modbus tag within a device?
- The values I read from KepWare do not match the values on the PLC using Modbus TCP/IP Ethernet driver
- Float values not read correctly while other applications like Modbus View can read them as reverse Float
- Modscan data seemed to have been aligning actual data but not Kepware Server data
- Modbus float value is not showing correctly and need assistance to fix this
- User has KepServerEX and it is not reading all of the point from their Modbus PLC correctly as Some of the points are correct and some of them are not
This is a printer-friendly version of Article 299224 and may be out of date. For the latest version click CS299224