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2) Request for Write:
ENQ Drive No CMD Address
Number of
address to
read
Data SUM EOT
05h
“01”~
“1F”
“W” “XXXX” “1” ~ “8” = n “XXXX…” “XX” 04h
1 byte 2 bytes 1 byte 4 bytes 1 byte n * 4 bytes 2 byte 1 byte
Total bytes = 12 + n * 4 = Max 44
2.1) Acknowledge response:
ACK Drive No CMD Data SUM EOT
06h “01” ~ “1F” “W” “XXXX…” “XX” 04h
1:byte 2:bytes 1:byte n * 4 bytes 2 bytes 1 byte
Total bytes = 7 + n * 4 = Max 39
Note) When Request for Write and Acknowledge Response is exchanged between PC and Inverter
for the first time, previous data is returned. From the second time of transmission, the current data
will be returned.
2.2) Negative response:
NAK Drive No CMD Error code SUM EOT
15h “01” ~ “1F” “W” “**” “XX” 04h
1 byte 2 bytes 1 byte 2 bytes 2 bytes 1 byte
Total bytes = 9
3) Request for Monitor Register
This is useful when constant parameter monitoring and data updates are required.
Request for Register of ‘n’ numbers of Address (not consecutive)
ENQ Drive No CMD
Number of
address to read
Address SUM EOT
05h “01” ~ “1F” “X” “1” ~ “8”=n “XXXX…” “XX” 04h
1 byte 2 bytes 1 byte 1 byte n * 4 byte 2 byte 1 byte
Total bytes = 8 + n * 4 = Max 40
3.1) Acknowledge Response:
ACK Drive No CMD SUM EOT
06h “01” ~ “1F” “X” “XX” 04h
1 byte 2 bytes 1 byte 2 bytes 1 byte
Total bytes = 7
3.2) Negative Acknowledge Response:
NAK Drive No CMD
Error code
SUM EOT
15h “01” ~ “1F” “X” “**” “XX” 04h
1 byte 2 bytes 1 byte 2 bytes 2 bytes 1 byte
Total bytes = 9