Delta D25886 User Manual Page 31

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2. System Function
DVP-MC operating manual 2-23
2.3.3.3. 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
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