Delta Electronics DVP10MC11T [34/375] Message format

2. System Function

2-26 DVP-MC operating manual

2.3.5.3. Message Format

The following is the format of the Modbus packet of CNC program downloaded dynamically.

Request message format:

0 1 2…n-1 n…n+1

Address Function Code 0x7A] G-Code string Parity

Address: The communication node ID of DVP10MC11T, default: 02

Function Code: Function code, 0x7A indicates to download CNC programs dynamically.

G-Code String: A complete row of CNC program character string presented in ASCII code value with the

symbol of “Enter” in the end.

For instance, suppose that the address of DVP10MC11T is 02, the G code character string to be download is

N00 G00 X10.0 Y10.0.

The request message (Hex) will be 027A4E303020473030205831302E30205931302E300D8E57

Explanation of message:

027A: Node ID and function code

4E303020: N00 [A blank space]

47303020: G00 [A blank space]

5831302E3020: X10.0 [A blank space]

5931302E300D: Y10.0 [A blank space]

8E57: CRC parity

Response message format:

0 1 2 3-4

Address Function Code [0x7A] ResposeCode Parity

Address: The node ID of DVP10MC11T, default: 02.

Function Code: Function code, 0x7A indicates to download CNC program dynamically.

Response Code:

00 Illegal function code

01 Success

02 In process of transmission

04 Illegal command

05 Time-out

06 Illegal length of the message received

07 Equipment is busy

08 The buffer area receiving data is full