Modbus RTU Slave: How to trigger Blockly project

1. Scenario Description

• Device: xArm Controller (AC1320 or later, AC8520 or later)
• Firmware: V2.7.104 or later
• Communication: Modbus RTU
• Device Role: Slave
• Target Function: Trigger an Blockly project named 00012.

2. Mapping Between Coils and CO

Modbus Holding Registers Address	Description	Other
0030	Blockly Project	The value stands for the project name

3. Modbus RTU Command Examples (Function Code 0x10)

Raw Command Frame (HEX)

01 10 00 30 00 01 02 00 0C A3 A5

Command Structure Breakdown

Slave Address: 01 (1)
Function Code: 10
Start Address: 00 30 (0030)
Number of Registers: 00 01 (1)
Byte Count: 02 (2)
Data Field:
  Address 00 30: 00 0C(UINT16: 12)
CRC: A3 A5

Response Frame (HEX)

01 10 00 30 00 01 01 C6

Command Structure Breakdown

Slave Address: 01 (1)
Function Code: 10
Start Address: 00 30 (48)
Number of Registers: 00 01 (1)
CRC: 01 C6