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COOLMAY EX3G PLC/HMI All in one Programming manual
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2) Communication Parameter setting: Open "Application --- Setting OP --- Network Settings"
Controller ID Address Mode: Select the default standard mode
2.HMI as mater and connect to multi-slaves setting:
Note: When the HMI is used as the Master with multiple slaves, the communication port must be set to
COM2 in the Link1 setting (HMI optional RS485). In the Link2 setting, the communication port is changed
to COM1 for communicating HMI of all-in-one to PLC of all-in-one.
1) In communication parameters setting,Open "Application --- Setting OP parameters --- Communication
settings"
Settings in the link1 are as follows:
Communication port: COM2.
Device type: Modbus RTU Slave.
Communication speed, communication timeout, check bit, data bit, stop bit: according to their own
communication needs, the master and salve must be set as the same.
2) In Communication Parameter Settings, Open "Application --- Set Working Parameters --- Network
Settings" .
Controller ID Address Mode: Select Extended Mode.