4-162
4-4 Communication Function
4
Functions
<Negative Response>
•Response frame
Frame format
STX Station No. NAK Error code BCC CR
Description Data size Setting
STX Control code (Start of TeXt) 1 byte STX (0x02)
Station No. Station No. of the target Inverter 2 bytes 01 to 32
NAK
Control code
(Negative AcKnowledge)
1 byte NAK (0x15)
Error code Communication error status 2 bytes *
BCC Block check code 2 bytes
Exclusive OR from station No. to
data. (Refer to page 4-163.)
CR Control code (Carriage Return) 1 byte CR (0x0D)
*
Error Code List
Error code Description
01H Parity error
02H Checksum error
03H Framing error
04H Overrun error
05H Protocol error
06H ASCII code error
07H Receiving buffer overrun error
08H Receiving timeout error
11H Command invalid error
12H
13H Execution disabled error
14H
15H
16H Parameter invalid error
17H
During communication with all stations, the Inverter
sends no response.
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