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Kepware Knowledge Base: Solution


Error Received Block Length of 1 does not match expected length of 2 for address 10048 on device 07.1-1-34


Last Update: 11/12/2018

Problem:
Reading data from the device returns more registers than requested.

Possible Cause:
This error typically occurs when trying to read data from a flow model controller/RTU with standard Modbus. These devices have address configurations where a call to a single Modbus register (typically a 16-bit data type) will return a 32-bit data type.

Solution:
Select the correct model type or driver for the device.

Related Products
Modbus Suite