Device Addressing; Ladder Logic Programming - IMO Precision Controls i3 Tutorial

Device Addressing

Function
Set Value
Present Value
Set Frequency
Current Frequency
Start Drive

Ladder Logic Programming

Now that the protocol has been configured. We need to control the process. The user
will be able to set the desired temperature in the PID controller and then the i
drive the VXM that controls a fan. The user can enter the frequency at which the
inverter will drive and also check the communication status of the network.
With the protocol set up in the Protocol Config, for the communications all we are
required to do is to open the port. Click the "open port" icon
Communication functions menu and insert it in a rung with an "always on" contact
Enter the details as shown opposite to
configure the port to the desired
communication parameters.
©IMO Precision Controls Ltd.
Modbus Master
Device
DTP40A
DTP40A
VXM
VXM
VXM
8
Modbus Address
40002
40129
41797
42057
01798
from the
3
i Local Register
%R3
%R1
%R4
%R5
%M01
3
will