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8 Communications Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
8-6 ASCII Method
8
8-6-2 Communications Commands
<Negative Response>
• Response frame
*1 Error Code List
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 target Inverter 2 bytes 01 to 32
NAK
Control code (Negative
AcKnowledge)
1 byte NAK (0x15)
Error code Communications error status 2 bytes
*1
BCC Block check code 2 bytes
Exclusive OR of frame segments from
Station No. to Data (Refer to page 8-94.)
CR Control code (Carriage Return) 1 byte CR (0x0D)
Error code Description
01 H Parity error
02 H Checksum error
03 H Framing error
04 H Overrun error
05 H Protocol error
06 H ASCII code error
07 H Receiving buffer overrun error
08 H Receiving timeout error
– –
– –
11 H Command invalid error
12 H –
13 H Execution disabled error
14 H –
15 H –
16 H Parameter invalid error
17 H –
During a broadcast to all stations, the inverter sends back no response.
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