Salicru CV50-008-4F User Manual page 114

The RTU response command is:
High bit of write data
Low bit of write data
High bit of data number
Low bit of data number
Low bit of CRC
High bit of CRC
9.4.2 ASCII mode
9.4.2.1 Command code: 03H (0000 0011), read N words (Word) (max. number for continuous reading is
16 words)
For instance: As for the inverter whose slave address is 01H, the starting address of internal storage is 0004,
read two words continuously, the structure of this frame is listed as below:
ASCII master command message (the command
sent from the master to the inverter
START
ADDR
CMD
High bit of starting address
Low bit of starting address
High bit of data number
Low bit of data number
LRC CHK Hi
LRC CHK Lo
END Hi
END Lo
9.4.2.2 Command code: 06H (0000 0110), write one word (Word)
For instance: Write 5000 (1388H) to the 0004H address of the inverter whose slave address is 02H, then the
structure of this frame is listed as below:
ASCII master command message (the command
sent by the master to the inverter)
START
ADDR
CMD
114 - 144
START
ADDR
CMD
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ASCII slave response message (the message
sent from the inverter to the master)
':'
'0'
'1'
'0'
'3'
'0'
Byte number
'0'
'0'
High bit of data address 0004H
'4'
'0'
Low bit of data address 0004H
'0'
'0'
High bit of data address 0005H
'2'
'F'
Low bit of data address 0005H
'6'
CR
LF LRC CHK Lo
ASCII slave response message (the message
sent by the inverter to the master)
':'
'0'
'2'
'0'
'6'
02H
10H
00H
04H
00H
02H
C5H
6EH
START
ADDR
CMD
LRC CHK Hi
END Hi
END Lo
START
ADDR
CMD
Communication Protocol
':'
'0'
'1'
'0'
'3'
'0'
'4'
'1'
'3'
'8'
'8'
'0'
'0'
'0'
'0'
'5'
'D'
CR
LF
':'
'0'
'2'
'0'
'6'