Chapter 4 explanation of functions – Hitachi SJ700-2 User Manual

Page 188

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Chapter 4 Explanation of Functions

4 - 1

25

(vi) 05 command: This command reads the trip history data from 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

05

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 monitored at tripping

440 bytes

See Note 9.

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 11: The inverter stores the data (trip history) on the last six times of tripping, together with the total

trip count (8 bytes).

Total trip count

Trip 1 data

・・・・・・

Trip 6 data

Monitoring item

Unit

Magnification

Data size

Remarks

Trip factor

-

-

8 bytes Factor code

Inverter status A

-

-

8 bytes

Inverter status B

-

-

8 bytes

Inverter status C

-

-

8 bytes

04 command

See Note 7.

Output frequency

Hz

×10

8 bytes Decimal ASCII code

Cumulative running time

hour

×1

8 bytes Decimal ASCII code

Output current

A

×10

8 bytes Decimal ASCII code

DC voltage

V

×10

8 bytes Decimal ASCII code

Cumulative power-on time

hour

×1

8 bytes Decimal ASCII code


H

ig

h-

or

der

byt

e

s
Lo
w

-or

der

bytes


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