Remote Io Acquisition Control; Switch Value Acquisition - Ebyte E90-DTU User Manual

Chengdu Ebyte Electronic Technology Co., Ltd.
Fixed-point sending demo:
To send DTU_1 to DTU_2, you need to add 00 05 05 (HEX) before the data;
To send DTU_2 to DTU_1, add 00 0F 0F (HEX) before the data;

4.4 Remote IO acquisition control

4.4.1 Switch value acquisition

The device has a dry contact input interface for detecting digital input, and the input status can be inquired
through the Modbus RTU command (the DI register address is 20001, see "Modbus register table" for details).
In configuration mode, the input status can be queried through Modbus commands (HEX: 01 02 00 00 00 01
B9 CA).
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