Rockwell Automation 1758-RTU202 DataSite Software User Manual FRN 1.2 - Manual (Page 50)

Publication 1758-UM002D-EN-P - October 2010
50 DataSite Configuration Settings Utility (DS Settings)
Configuration Example By configuring a scan block as a US1 or US2 block, we can read from and
write to the equipment connected with the DataSite controller.
For example, we can take two DataSite controllers connected via RS232 serial
communication, with COM1 of one DataSite controller as the master station,
and COM1 of the other controller as the slave station. The master station can
read/write the slave station’s signal via the serial communication between the
two stations.
The following subsections provide you with one way of configuring the
DataSite controllers in this example.
Step 1: Configure the Controller Communications Settings for the Modbus
Master Station
44679
DataSite controller
COM1
Master Station as 1
00100...00103
DataSite controller
COM1
Slave Station as 2
00001...00004
RS232
100 ms timing
Read-coil