COOLMAY EX3G PLC/HMI All in one Programming manual
66
5. Click “Update *.hw6 file”, enter the corresponding level password , the default super password is
12345678, the default normal password is empty (direct confirmation);
if you changed the password, you need to enter the corresponding correct password;
After confirming, find the “.HW6” file in the lower right corner. After double-clicking, the confirmation box
will pop up. The progress bar will be updated automatically.
3.3 Introduction when HMI is with com port for MODBUS RTU protocol
3.3.1 HMI as master
Note: When the HMI is used as a Master with one slave, the communication port can be set to COM2 in
Link1 or Link2 settings (Optional RS485 or RS232 for HMI, multiple slaves not available for RS232), and
COM1 is used for communicating HMI of all-in-one to PLC of all-in-one.
1.HMI as master and connect to only one slave settings:
1) Open "Application --- Setting OP Parameters --- Communication Settings"
link2 settings are as below:
Communication port : COM2
Device Type: Modbus RTU Slave
Communication speed, communication timeout, check bit, data bit, stop bit: according to your own
communication needs, , the master and salve must be set as the same.
Device ID : The slave number to be read.
