E6581913
26
5.1.1. Read command (03H)
Computer → Inverter *The text size is 8 bytes fixed.
Communication No. Number of Data
Groups
CRC16
Inverter
No.
Com-
mand
high low high low low high
03 00 01
1) Inverter No. (1 byte) : ---
2) Command (1 byte) : Set the read command (03H fixed).
3) Communication No. (2 bytes) : Set in the order of high to low numbers.
4) Number of data groups (2 bytes) : Set the number of data words 0001 (fixed) in the order of high to low numbers.
5) CRC16 (2 bytes) : ---
Inverter → Computer (Normal return) *The text size is 7 bytes fixed.
Read data CRC16
Inverter
No.
Com-
mand
Number
of Data
high low low high
03 02
1) Inverter No. (1 byte) : ---
2) Command (1 byte) : Read command (03H fixed) will be returned.
3) Number of data : A number of data bytes (02H fixed) will be returned.
The number of data groups for transmission to the inverters is 2 bytes and 01H fixed.
4) Read data (2 bytes) : Returned in the order of read data (high) and (low).
5) CRC16 (2 bytes) : ---
Inverter → Computer (Abnormal return) *The text size is 5 bytes fixed.
CRC16
Inverter
No.
Command Error Code
low high
83
1) Inverter No (1 byte) : ---
2) Command (1 byte) : 83H fixed (Read command error) (Command + 80H)
3) Error code (1 byte) : See ”5.3. Error codes”.
4) CRC16 (2 by
tes) : ---
Example: Reading output frequency (During 60Hz operation)
(Computer → inverter) 01 03 FD 00 00 01 B5 A6
(Inverter → computer) 01 03 02 17 70 B6 50
Example: Data specification error
(Computer → inverter) 01 03 FD 00 00 02 F5 A7
(Inverter → computer) 01 83 03 01 31
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