Echelon i.LON SmartServer 2.0 - Manual (Page 260)

i.LON SmartServer 2.0 Programmer’s Reference 15-11
15.4.1 Using the List Function on Modbus Data Points
You can use the List function to retrieve a list of Modbus data points on the SmartServer. The List
function takes an element that has an xSelect statement with a MOD_Dp_Cfg type as its
input, as shown in the example below.
Request (use an xSelect statement to return all the Modbus data points on the SmartServer)
//Item[@xsi:type="MOD_Dp_Cfg"]
Alternatively, you can filter the Modbus data points returned by the List function to those on a specific
device by including the of the parent device in the xSelect statement, or you can filter
the Modbus data points returned using the and data point
properties.
Request (use an xSelect statement to return all the Modbus data points on a specific device)
//Item[@xsi:type="MOD_Dp_Cfg"][starts-with(UCPTname,"Net/Modbus Channel/LAE_LCD15_2")]
Request (use an xSelect statement to return all the Modbus data points that were updated after a
specific time)
//Item[@xsi:type="MOD_Dp_Cfg"][UCPTlastUpdate>"2008-03-31T00:00:00"]
Request (return all the Modbus data points of a specific type based on name)
//Item[@xsi:type="MOD_Dp_Cfg"][contains(UCPTname,"Alrm")]
Response
Net/Modbus
Channel/LAE_LCD15_1/VirtFb/Alrm_1
Dp_In_Out;xsi:type="MOD_Dp_Cfg"
0
Net/Modbus
Channel/LAE_LCD15_1/VirtFb/Alrm-Prb1_1
Dp_In_Out;xsi:type="MOD_Dp_Cfg"
0
Net/Modbus
Channel/LAE_LCD15_1/VirtFb/Alrm-Prb2_1
Dp_In_Out;xsi:type="MOD_Dp_Cfg"
0
Net/Modbus
Channel/LAE_LCD15_1/VirtFb/Alrm-Prb3_1
Dp_In_Out;xsi:type="MOD_Dp_Cfg"
0