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

2 bytes

01 to 32

inverter

 

 

 

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

2 bytes

01 to 32

inverter

 

 

 

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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Image 179
Hitachi SJ700-2 instruction manual Inverter status a Inverter status B Inverter status C, Data Bytes See Note