Hardy HI 6600 Series Modular Sensor System - Manual (Page 57)

HI 6600 Series Modular Sensor System User Guide
Page | 57
The Modbus Diagnostics parameters count the number of frames received by the Hardy HI 6600 series and how many of
these are valid compared to error frames. In this case, the unit is correctly reporting that it is not connected and is not
receiving any frames.
Installing the Hardy Modbus-Link Test Package
If you do not have a PLC or other client, Hardy has provided the Hardy Modbus-Link Client to test communications with
the HI 6600 unit. This client package only communicates with the unit and is not a full communications package. If you
have problems with this test, contact Hardy Technical Support. Double click the Hardy Modbus-Link .exe file to install
the software on your PC. Upon completion, a Hardy Modbus-Link icon appears on your Desktop.
Modbus services are specified by function codes that are elements of MODBUS request / reply PDUs. MODBUS is
implemented for the HI 6600 using TCP/IP over Ethernet. The Client/Server definitions are as follows:
• Client - The module asking for data.
• Server - The module providing the data.
NOTE: MODBUS is positioned at level 7 of the OSI model and is accessed at a reserved system port 502 on the TCP/IP
stack. It will support communication with up to 10 different hosts (sockets).
Configuring MODBUS TCP
1) Click the Hardy Modbus-Link icon to open the Hardy Modbus-Link display.