103
7.11
Check of Connection
Communicating with the terminals in the system enables to check the MODBUS RTU communication connection with each
control unit in the system.
(1) Connect the computer and the parent terminal of control unit with a LAN cable.
In addition, connect between each control unit in the system via MODBUS RTU communication.
*Set the computer’s IP address in order to be in the same network with the parent terminal of control unit.
(2) Enter the password of the parent terminal.
For the password, refer to
(3) Click the
Connection check
button.
(4) The check result is displayed in the list on the bottom of the window.
Icon
Result
Details
Connection OK The connection is correct.
Connection NG
The connection is not correct.
Check the MODBUS RTU communication lines or network settings to eliminate the source
Unit
configuration
mismatch
For a unit configuration with a target control unit, the model name of the extension unit actually
connected is different from the one set with Control Unit Engineering Tool.
Check the control unit configuration and then change the setting in order to match with the actual model.
*If the number of the extension units differs, the result will be displayed as Connection NG not Unit
configuration mismatch.
Mismatch between the
settings and actual connection
