SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.

Chapter 4 Explanation of Functions
(v) 04 command: This command reads the status of the inverter.
- Transmission frame
Frame format
STX Station No. Command BCC CR
Description Data size Setting
STX Control code (Start of TeXt) 1 byte STX (0x02)
Station No.
Station number of control-target
inverter
2 bytes 01 to 32
Command Command to be transmitted 2 bytes 04
BCC Block check code 2 bytes
XOR of the items from "Station No." to "Data."
See Item (3) of this section.
CR Control code (Carriage Return) 1 byte CR (0x0D)
- Response frame
Frame format
STX Station No. Data BCC CR
Description Data size Setting
STX Control code (Start of TeXt) 1 byte STX (0x02)
Station No.
Station number of control-target
inverter
2 bytes 01 to 32
Data Data 8 bytes See Note 8.
BCC Block check code 2 bytes
XOR of the items from "Station No." to "Data."
See Item (3) of this section.
CR Control code (Carriage Return) 1 byte CR (0x0D)
Note 10: The data indicating the status of the inverter consists of the following three status elements (A, B,
and C):
Data
Status A Status B Status C 00 (reserved)
Inverter status A Inverter status B Inverter status C
Code Status Code Status Code Status
00 Initial status 00 Stopping 00 ---
01 01 Running 01 Stopping
02 Stopping 02 Tripping 02 Decelerating
03 Running 03 Constant-speed operation
04 Free-run stop (FRS) in progress 04 Accelerating
05 Jogging (JG) in progress 05 Forward operation
06 DC braking (DB) in progress 06 Reverse operation
07 Retry in progress 07 Switching forward operation
08 Tripping to reverse operation
09 Undervoltage (UV) status 08 Switching reverse operation
to forward operation
09 Starting forward operation
10 Starting reverse operation
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