645 Timing Of The Agreement - Waveshare RS485 TO ETH Manual

485 TO ETH (B) User Manual
Click the "JSON Download" button of "JSON to Modbus RTU Settings" to open the
above dialog box. It is divided into three categories: Modbus setting coil instructions,
Modbus write register instructions, and transparent transmission instructions.
Modbus setting coil command: It is the 05 command, where you can specify the slave
address, register address and set it to On and Off. In terms of data, if it corresponds to the
JSON of "alarm":"1", you need to write the complete ""alarm":"1"" into the box, including
quotation marks and colons.
Modbus register write instruction: it is the 06 instruction, currently supports 2 to 4
bytes, that is, 1 and 2 register writes. The data must be integer (without decimal point). Here
you can set the sending station address, register address, and the number of bytes. If it is 4
bytes, you can select the big-endian format or the little-endian format. For data convenience,
if the corresponding method is "temp":"1234", you need to enter ""temp":"" in the input
box. Here, you need to enter the characters before 1234, including quotation marks.
For the transparent transmission method, the issued command will be transparently
transmitted to the serial port without analysis. Once the pass-through party is selected
In this way, all JSON delivery and parsing will be disabled.

3.13. 645 TIMING OF THE AGREEMENT

The time service of the 645 protocol is 68 99 99 99 99 99 99 68 08 06 SS MM HH DD
MM YY CS 16, where SS MM HH DD MM YY are seconds, minutes, hours, days, months, and
years.
Figure 26 Sending JSON to Modbus
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