Hitachi SJ700-2 Instruction Manual page 200

(ii) Reading registers [03h]
This function reads a specified number of registers beginning at a specified register address.
(Example)
When reading the trip history data from the inverter at slave address "5":
Assume that the conditions of the past three trips are as follows:
SJ700 command
Register number
Trip factor (upper digit)
Query
Field name
1 Slave address (*1)
2 Function code
3 Starting register number
(upper digit) (*2)
4 Starting register number
(lower digit) (*2)
5 Number of registers (upper
digit)
6 Number of registers (lower digit)
7 CRC-16 code (upper digit)
8 CRC-16 code (lower digit)
*1 This query cannot be broadcasted.
*2 Note that the starting coil number is 1 less than the
actual coil number of the coil to be read first.
Read the data received in the response as follows:
Response buffer
Starting register number
Response data
If the function to read registers cannot be executed normally, the inverter will return an exception
response. For details, see Item (viii), "Exception response."
d081 (factor of most recent trip)
0012h
Overvoltage (E07)
Sample setting
(hexadecimal)
05
03
00
11
00
02
95
8A
+0 (upper
Trip condition Trip due to overvoltage
Chapter 4 Explanation of Functions
d081 (inverter state at most recent trip)
Response
Field name
1 Slave address
2 Function code
3 Number of data bytes (*3)
4 Starting register number
(upper digit)
5 Starting register number
(lower digit)
6 Starting register number + 1
(upper digit)
7 Starting register number + 1
(lower digit)
8 CRC-16 code (upper digit)
9 CRC-16 code (lower digit)
*3 The data equivalent to the specified number of data
bytes is transferred. In this example, 4 bytes are
transferred because the data on two registers is
returned in the response.
4 5
+0 (lower
digit) digit)
00h 07h
4 - 137
0013h
Decelerating (02)
6 7
+1 (upper +1 (lower
digit) digit)
00h 02h
Decelerating
Sample setting
(hexadecimal)
05
03
04
00
07
00
02
36
37