Toshiba Tosvert RS485 - Manual (Page 17)

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2) Error Processing (Binary mode)
In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type num-
ber is returned to the computer in addition to the checksum.
Omissible
(3.5bytes
Blank)
“/”
(2FH)
INV-NO
1 byte
Norn
(4EH)(6EH)
DATA
2 bytes
SUM
1 byte
(3.5bytes
Blank)
Checksum area
Not omissible
“N” or “n” (1 byte) : Communication error command. Also for check during an inverter trip (includes standing
by for retrying and trip holding). “4EH (N)” when normal, “6EH (n)” during an inverter trip.
DATA (2 bytes) : Error code (0004)
0004
: Checksum error (The checksum does not match)
No return : Command error, format error (specified number of bytes is not received in 1sec,
or parity error, overrun error or framing error), inverter number mismatch, and
inverter number other than 00H in broadcast communication.
„ Examples
Computer → Inverter : 2F 58 02 05 C4 00 17 70 D8
Inverter → Computer : 2F 4E 00 04 81 ... Checksum error