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King Pigeon Hi-Tech. Co., Ltd.
Ver 1.3
GSM/SMS/GPRS/3G/4G
Cellular IoT Gateway
For example, when device as Modbus RTU slave, connect to HMI as below:
(1) Connect device to HMI via RS485 port, set HMI RS485 port parameter;
(2) In "Basic Parameter Settings" page, set "Device ID", range is 1~247 in Modbus protocol as below:
(3) In "Serial Port" setting page, set device parameter as below:
A) RS485 used as "Modbus RTU Slave";
B) Baud Rate, Data Bit, Parity Bit, Stop Bit setting should be corresponding with HMI, otherwise commucation
will be failure. If multiple Masters, all Masters parameter should corresponding with device;
C) No need set: "Scan Rate", "Time Out", "Slave Fault Verify Time";
D) Click "Save" button.
(4) In HMI configuration software, set the Modbus RTU Register address of device. Refer to
reigister”]
;