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4-163
4-4 Communication Function
4
Func
tions
<Reading Holding Register Content [03h]>
Reads consecutively the specified number of holding register contents from the specified holding
register address.
(Example)
Read past trip data from the Inverter with slave address 5.
Below is the data on past three trips:
Read the data received in response, as follows:
If the holding register content has not been read out normally, refer to the "Exception Response"
section.
3G3RX command
d081 (Previous factor)
d081 (Previous Inverter status)
Holding register No.
0012h
0013h
Trip factor (high-order)
Overvoltage (E07)
During deceleration (02)
Query
Response
No.
Field name
Example
(HEX)
No.
Field name
Example
(HEX)
1
Slave address
*1
05
1
Slave address
05
2
Function code
03
2
Function code
03
3
Register start number (MSB)
*2
00
3
Number of data bytes
*3
04
4
Register start number (LSB)
*2
11
4
Register start number (MSB)
00
5
Number of holding registers (MSB)
00
5
Register start number (LSB)
07
6
Number of holding registers (LSB)
02
6
Register start 1
(MSB)
00
7
CRC-16 (MSB)
95
7
Register start 1
(LSB)
02
8
CRC-16 (LSB)
8A
8
CRC-16 (MSB)
36
*1. Broadcasting cannot be performed.
*2. Note that the start number is reduced by 1.
9
CRC-16 (LSB)
37
*3. Transfers data by the number of data bytes. In
this example, the Inverter sends response data
on two holding registers (4 bytes).
Response buffer
4
5
6
7
Holding register start
number
+0 (MSB)
+0 (LSB)
+1 (MSB)
+1 (LSB)
Response data
00h
07h
00h
02h
Trip cause
Overvoltage trip
During deceleration
Summary of Contents for 3G3RX Series
Page 1: ...Cat No I560 E1 03 USER S MANUAL SYSDRIVE RXSERIES High function General purpose Inverter ...
Page 2: ......
Page 17: ...Chapter 1 Overview 1 1 Functions 1 1 1 2 Appearance and Names of Parts 1 4 ...
Page 22: ......
Page 23: ...Chapter 2 Design 2 1 Installation 2 1 2 2 Wiring 2 6 ...
Page 48: ......
Page 108: ......
Page 324: ......
Page 337: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 1 ...
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Page 437: ...Index ...
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