Delta MS300 Series User Manual page 797

Appendix A. Modbus ProtocolMS300
A-4 Address List
ASCII
1.
(1) Reads one or more parameter values: 3Ah (start bit' : ') + 30h 31h (station address 01) + 30h
33h (function code 03h) + 30h 30h xxh xxh–32h 36h xxh xxh (Modbus address 00xxh–26xxh)
+ 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 xxh–32h 36h xxh xxh(Modbus address 00xxh–26xxh) + 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 xxh–32h 36h xxh xxh (Modbus address 00xxh–26xxh) +
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
RTU
2.
(1) Reads one or more parameter values: 01h (station address 01) + 03h (function code 03h) +
00xxh–26xxh (Modbus address) + xxxxh (reading length) + CRC (checksum)
(2) Writes one parameter value: 01h (station address 01) + 06h (function code 06h) + 00xxh–
26xxh (Modbus address) + xxxxh (writing value) + CRC (checksum)
(3) Writes 20 parameter values: 01h (station address 01) + 10h (function code 10h) + 00xxh–
26xxh (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)
AC motor drive parameters (GGnnH): communication station address is Pr.09-00 setting value
3.
Modbus
Attribute (Function Code)
Address
GGnnH R(03H) / W(06H, 10H)
Control command (20xx): communication station address is Pr.09-00 setting value
4.
Function Name
Operation command
GG means parameter group, nn means parameter number. For
example, the Modbus address of Pr.04-10 is 040AH when
reading by Delta VFDsoft.
Attribute
Modbus
(Function Size
Address
Code)
R (03H) /
2000H W (06H, U16
10H)
Description
00B: No function
01B: Stop
bit1–0
10B: Run
11B: JOG + Run
bit3–2 Reserved
00B: No function
01B: FWD
bit5–4
10B: REV
11B: Change direction
00B: 1st accel. / decel. 1. Valid only when 2000h
01B: 2nd accel. / decel.
bit7–6
10B: 3rd accel. / decel.
11B: 4th accel. / decel.
788
Description
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).
bit12 is set to 1.
2. Obtain the current
running speed by