Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 199)

Publication 1758-UM002D-EN-P - October 2010
DataSite Flow Configuration Utility (DS FloConfig) 199
Slave Register
This is the start address of the register on the slave equipment for reading data
from and writing data to. The controller will read data from or write data to the
slave equipment from this address. The address range is determined by the
signal type.
Reg_Num
The number of read/write data registers that follow the start register address
of the master register and the slave register. For example, if Reg_Num is 10,
the Master Register is 40001 and the Slave Register is 41001, this means there
are 10 master registers with register addresses running sequentially from
40001…40010, and 10 slave registers with register addresses 41001…41010.
Remark
This field lets you enter a note or a tip for the scan block. This information can
be saved onto the PC but unlike other parameters, it will not be downloaded to
the DataSite controller. The maximum string length for this field is 90
characters.
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.