4-72
(4) Acknowledge / Negative acknowledge response
(i) Acknowledge response
Reply frame
Frame format
Explanation
Data
size
Value
STX
Control code(Start of TeXt)
1 byte
STX (0x02)
Code
Station number of inverter
2 byte
01-32
ACK
Control code(ACKnowledge)
1 byte
ACK(0x06)
BCC
Block check code
2 byte
Exclusive OR of Code, Command and
Data (5) Reference
CR
Control code(Carriage Return)
1 byte
CR (0x0D)
(ii) Negative acknowledge response
Reply frame
Frame format
(Note 11) Error code list
Inverter doesn’t reply on all code communication.
STX
Code
ACK
BCC
CR
STX
Code
NAK
Error code
BCC
CR
Explanation
Data
size
Value
STX
Control code(Start of TeXt)
1 byte
STX (0x02)
Code
Station number of inverter
2 byte
01-32
NAK
Control code
(Negative ACKnowledge)
1 byte
NCK(0x06)
Error code
Error contents of
Communication
2 byte
(Note 11)
BCC
Block check code
2 byte
Exclusive OR of Code, Command and
Data (5) Reference
CR
Control code
(Carriage Return)
1 byte
CR (0x0D)
Error code
Contents
01H
Parity error
02H
Sum check error
03H
Framing error
04H
Overrun error
05H
Protocol error
06H
ASCII code error
07H
Reception buffer overrun error
08H
Reception time out error
-
-
-
-
11H
Error for abnormal command
12H
-
13H
Practice disapproval error
14H
-
15H
-
16H
Parameter abnormal error
17H
-
Chapter 4 Explanation of function