Delta VFD4A8ME21ANNAA User Manual

Chapter 12 Description of Parameter SettingsME300
12.1-09-4
3. Communication Protocol
Communication Data Frame
ASCII mode:
STX Start character = ‘ : ’ (3AH)
Address Hi
Communication address:
one 8-bit address consists of 2 ASCII codes
Address Lo
Function Hi
Command code:
one 8-bit command consists of 2 ASCII codes
Function Lo
DATA (n-1)
Contents of data:
N x 8-bit data consists of 2n ASCII codes
N ≤ 16, maximum of 32 ASCII codes (20 sets of data)
…….
DATA 0
LRC CHK Hi
LRC checksum:
one 8-bit checksum consists of 2 ASCII codes
LRC CHK Lo
END Hi
End characters:
END Hi = CR (0DH), END Lo = LF (0AH)
END Lo
RTU mode:
START Defined by a silent interval of more than 10 ms
Address Communication address: 8-bit address
Function Command code: 8-bit command
DATA (n-1)
Contents of data:
N × 8-bit data, n ≤16
…….
DATA 0
CRC CHK Low
CRC checksum:
one 16-bit checksum consists of 2 8-bit characters
CRC CHK High
END Defined by a silent interval of more than 10 ms
Communication Address (Address)
00H: broadcast to all AC motor drives
01H: AC motor drive of address 01
0FH: AC motor drive of address 15
10H: AC motor drive of address 16
:
FEH: AC motor drive of address 254
Function code (Function) and DATA (Data characters)
03H: read data from a register
06H: write to a single register
Example: Reading two continuous data from register address 2102H. AMD address is 01H.

Delta VFD4A8ME21ANNAA Specifications

General

Brand	Delta
Model	VFD4A8ME21ANNAA
Category	DC Drives
Language	English