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Delta MH300 Series - A-4 Address List

Delta MH300 Series
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Appendix A. Modbus Protocol
MS300
A-9
A-4 Address List
1. ASCII
(1) Reads one or more parameter values: 3Ah (start bit‘ : ’) + 30h 31h (station address 01) + 30h
33h (function code 03h) + 30h 30h xxh xxh32h 36h xxh xxh (Modbus address 00xxh26xxh)
+ xxh xxh xxh xxh (reading length 1) + LRC (checksum) + CR/LF
(2) Writes one parameter value: 3Ah (start bit‘ : ’) + 30h 31h (station address 01) + 30h 36h (function
code 06h) + 30h 30h xxh xxh32h 36h xxh xxh(Modbus address 00xxh26xxh) + xxh xxh xxh
xxh (writing value) + LRC (checksum) + CR/LF
(3) Writes 20 parameter values: 3Ah (start bit‘ : ’) + 30h 31h (station address 01) + 31h 30h (function
code 10h) + 30h 30h xxh xxh32h 36h xxh xxh (Modbus address 00xxh26xxh) + 30h 30h 31h
34h (word data length) + 30h 30h 32h 38h(byte data length) + xxh xxh xxh xxh (the first writing
value) + ... + xxh xxh xxh xxh (the 20th writing value) + LRC (checksum) + CR/LF
2. RTU
(1) Reads one or more parameter values: 01h (station address 01) + 03h (function code 03h) +
00xxh26xxh (Modbus address) + xxxxh (reading length) + CRC (checksum)
(2) Writes one parameter value: 01h (station address 01) + 06h (function code 06h) + 00xxh26xxh
(Modbus address) + xxxxh (writing value) + CRC (checksum)
(3) Writes 20 parameter values: 01h (station address 01) + 10h (function code 10h) + 00xxh26xxh
(Modbus address) + 0014h (data length, count by word) + 0028h (data length, count by byte) +
xxxxh (the first writing value) + ... + xxxxh (the 20th writing value) + CRC (checksum)
3. AC motor drive parameters (GGnnH): communication station address is Pr.09-00 setting value
Modbus
Address
Attribute (Function Code) Description
GGnnH R(03H) / W(06H, 10H)
GG means parameter group, nn means parameter number. For
example, the Modbus address of Pr.04-
10 is 040AH when reading
by Delta VFDsoft.
4. Control command (20xx): communication station address is Pr.09-00 setting value
Function Name
Modbus
Address
Attribute
(Function
Code)
Size
Description
Operation command 2000H
R (03H) /
W (06H,
10H)
U16
bit10
00B: No function
1. Remains the status
specified by a first
command until a second
command is received.
2. Valid only when
operation command
source is set to
communication (Pr.00-
03=2).
01B: Stop
10B: Run
11B: JOG + Run
bit3–2
Reserved
bit5–4
00B: No function
01B: FWD
10B: REV
11B: Change direction
bit7–6
00B: 1st accel. / decel.
1. Valid only when 2000h
bit12 is set to 1.
2. Obtain the current
running speed by
reading 2107h.
01B: 2nd accel. / decel.
10B: 3rd accel. / decel.
11B: 4th accel. / decel.
bit11–8
0000B: zero step speed
0001B: 1st step speed

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