Specifications

Application Note 105/905U-G-ET1 Modbus TCP
Issue 1.2 – Apr 2006
©ELPRO Technologies Pty Ltd
Page 9 of 12
app_905U-G_ModbusTCP_1.2.doc
You will
see each of
the Tags in
the OPC
Server
Correspond
s to the
values entered into the Debug I/O screen
Melrose Analog 1 has a scaled value of 11 for 20000
Melrose Analog 2 has a scaled value of 26 for 25000
River Room Analog 1 has a scaled value of 42 for 30000
River Room Analog 2 has a scaled value of 57 for 35000.
We can now check that we can write a value into the OPC Server and read a value in the
Debug I/O reg screen.
Right click the Output Tag in this case it is Channel1.Elpro105/905G.Gatway.CityAnalog and
enter a scaled value you wish to change.
You should now be able to go back to the Debug I/O register screen and see that the register
has changed. In this case the scaled value was set for 100 % which would change the register
value to 49152 (20mA)