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lamaPLC: TM1650 7-Segment Display with Modbus Communication
The TM1650 / STC8G IC performs the module's 7-segment control, and the TP8485E IC provides the Modbus communication connection.
This display is a 4-digit 7-segment display with a decimal point.
- Power supply: DC 5-36V
- Manufacturer reference: Hyuduo5x1b64edtk1244
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Modbus Features
Modbus connection characteristics:
Default Modbus settings: 9600 baud, 8N1, RTU communication, slave ID: 1
After powering up, a number, such as “0013”, flashes briefly. The first digit represents the slave ID (1), and the second indicates the baud rate (3: 9600).
The “write multiple registers” Modbus function (10) works, with three information (signal, number of digits, brightness) (2.468 / low brightness 1: TX 01 10 00 00 00 03 06 09 a4 00 03 00 01 a6 00)
The registers must be written one at a time using the “write single register” function (6). (Send 1234: TX: 01 06 00 00 04 d2 0b 57)
| Address | Function |
|---|---|
| 0 | To display Data send |
| 1 | Position of the decimal Point |
| 2 | Set Brightness |
| 3 | Set flash |
| 4 | Set Baudrate (Range 0 – 7 corresponds to 0:1200 1:2400 2:4800 3:9600 4:19200 5:38400 6:57600 7:115200) |
| 5 | Set the Address |
Display topics on lamaPLC
| Page | Date | User | Tags |
|---|---|---|---|
| 2025/10/09 21:11 | Sandor Vamos | communication, i2c, display, lcd, 1602, 2004, hd44780 | |
| 2025/10/09 15:48 | Sandor Vamos | i2c, 7-segment display, display, tm1637, arduino | |
| 2025/11/13 20:52 | Sandor Vamos | tm1650, stc8g, tp8485e, hyuduo5x1b64edtk1244, 7-segment, display, modbus, rtu, modbus rtu, arduino |
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