5.3 MEMOBUS/Modbus Communications
310
YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Note:
The number of bytes set in the command message set the data quantity × 2 during the command message.
Register status
bit 0
Data in register 1 selected with
H5-25
1: Successfully read the register
0: Register read error
bit 1
Data in register 2 selected with
H5-26
1: Successfully read the register
0: Register read error
bit 2
Data in register 3 selected with
H5-27
1: Successfully read the register
0: Register read error
bit 3
Data in register 4 selected with
H5-28
1: Successfully read the register
0: Register read error
bit 4
Not used
bit 5
Not used
bit 6
Not used
bit 7
Not used
■
Reading the Contents of Non-Consecutive Holding Registers
The drive uses function code 67 (Hex.) and subfunction code 010D (Hex.) to read data with a maximum of 120
holding registers.
You must give the holding register number from which to read separately.
shows example messages when you read the frequency reference and torque limit from the drive for
slave 1.
uses this register data for the examples.
•
0024H:
U1-01 [Frequency Reference]
= 60.00 Hz (6000 = 1770H)
•
0028H:
U1-09 [Torque Reference]
= 100.0% (1000 = 03E8H)
Table 5.10 Message Example When Reading the Contents of Non-Consecutive Holding Registers
Byte
Command Message
Response Message (When Normal)
Response Message (When There is a Fault)
Setting Data
(Hex.)
Setting Data
(Hex.)
Setting Data
(Hex.)
0
Slave address
01
Slave address
01
Slave address
01
1
Function code
67
Function code
67
Function code
E7
2
Subfunction
Code
Upper
01
Subfunction
Code
Upper
01
Error code
02
3
Lower
0D
Lower
0D
CRC-16
Upper
EA
4
Data Quantity
Upper
00
Byte No.
Upper
00
Lower
31
5
Lower
02
Lower
04
-
6
Holding register
1 No.
Upper
00
Holding register
1 data
Upper
17
-
7
Lower
24
Lower
70
-
8
Holding register
2 No.
Upper
00
Holding register
2 data
Upper
03
-
9
Lower
28
Lower
E8
-
10
CRC-16
Upper
8B
CRC-16
Upper
47
-
11
Lower
29
Lower
ED
-
Note:
The number of bytes set in the command message set the data quantity × 2 during the command message.
■
Writing to Non-Consecutive Holding Registers
The drive uses function code 67 (Hex.) and subfunction code 010E (Hex.) to read data with a maximum of 60
holding registers.
You must give the holding register number from which to write separately.
shows example messages when you write the frequency reference and torque limit from the drive for
slave 1.
uses these specified holding registers data for the examples.
Содержание CR700
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Страница 422: ...7 7 Storage Guidelines 422 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 426: ...8 2 Disposal Instructions 426 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
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