Chapter 8 LS Bus Protocol
Inverter Response format(ACK response)
Format name Header
Station
No.
Command Data Frame check Tail
Frame (Example) ACK H20 W H00E2 … BCC EOT
ASCII value H06 H3230 H57 H30304532 - - H04
Item Description
BCC
When ASCII value of each 1byte except ENQ and EOT is summed, the lowest 1byte of the result
value is BCC.
Inverter Response format(NAK response)
Format name Header Station No. Command
Error code
(ASC 2 Byte)
Frame
check
Tail
Frame (Example) NAK H20 W H12 BCC EOT
ASCII value H15 H3230 H57 H3132 - H04
Item Description
BCC
When ASCII value of each 1byte except ENQ and EOT is summed, the lowest 1byte of the result
value is BCC.
Error information is shown as hex 1byte (2bytes of ASCII code).
For more information, please refer to the error code of the inverter user manual.
Example
This describes if the user want to write "H00FF" to address number 1230 of station number 1 of inverter.
XGB request format (XGB → Inverter)
Format name Header
For ACK response after execution of command (XGB ← Inverter)
Format name Header Station No. Command Data Frame check Tail
Frame (Example) ACK H01 W H00FF BCC EOT
ASCII value H06 H3031 H57 H30304646 - H04
For NAK response after execution of command (XGB ← Inverter)
Format name Header Station No. Command Error code Frame check Tail