GFK-1425B Touch Display Products: IC752CTD400/450 31
MODBUS RTU Communications
Symptom Possible Causes Solution
Communications between the host
computer and the controller are
unsuccessful.
COM port not configured in
system. Verify that the COM port is
configured in the system.
Cabling between computer and
controller. Verify that the cable between the
computer and the controller is
correctly wired.
Baud rate and parity configured
incorrectly. Verify that the baud rate and
parity on the computer are
consistent with those on the
controller.
MODBUS port not configured for
RTU communications. Verify that the controller's
MODBUS port is configured for
RTU communications.
Wrong address. Verify that the slave address is
correct.
Network Communications
Symptom Possible Causes Solution
Conflicts on network. IP Address not unique. Change the IP address to a unique
address. (Contact your system
administrator if this or other
settings need to be changed.)