Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 User Manual
Page 39
Publication 1758-UM002D-EN-P - October 2010
DataSite Configuration Settings Utility (DS Settings) 39
Err_Cnt and Err_State
These two parameters do not require user configuration. If you set up a scan
block successfully, two columns for these parameters will be added in the scan
block list automatically.
The Err_Cnt value represents the number of times the scan block fails to
communicate with the slave device. After the scan block is configured, if there
is no connection with the slave device or if communication fails, this value will
be incremented by 1 after each scan cycle.
This value is an indication of the status and efficiency of the communication.
For example, if the value keeps incrementing, this means that the
communication has failed. This could be due to a faulty physical connection
between the DataSite controller and the slave device, or due to incorrect
parameter settings. In addition, a low value indicates a more efficient
communication.
If the Err_State value is 1, it means the communication has failed. A value of 0
indicates that the communication is OK.