Many things can result in these symptoms. One of the most common causes is that not all slave manufacturers use a standard byte order. It is very possible that when you think you're sending a value of "1" to a slave's bit address 0, you may be sending a "1" to the slave's bit address 8.
Enabling the Swap Input/Output Byte parameter would resolve the issue in this case.
Article ID: 393
Created On: Thu, Apr 24, 2008 at 1:51 PM
Last Updated On: Wed, Mar 9, 2011 at 2:32 PM
Authored by: Administrator
Online URL: https://www.prosoft-technology.com/kb/article.php?id=393