Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 38)

Publication 1758-UM002D-EN-P - October 2010
38 DataSite Configuration Settings Utility (DS Settings)
The scan time is equal to the value multiplied by the unit selected. For
example, if the value entered is "3" and the unit selected is "500 ms", then the
scan time is 3 x 500 ms = 1500 ms as shown in the following dialog box. This
means that the current scan block will be executed every 1500 ms.
Scanning starts when the DataSite controller is powered, and it continues
according to the scan time you have set.
Master Register
This is the start address of the register on the DataSite controller. Data is saved
into the master register starting from this address. The address range is
determined by the signal type.
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 Start_Register is 40001 and the Slave Start_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.