YASKAWA CIPR-GA50C series Technical Manual page 216

6.3 MEMOBUS/Modbus Communications
■
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.
Table 6.7 shows example messages when you read the frequency reference and torque limit from the drive for
slave 1. Table 6.7 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 6.7 Message Example When Reading the Contents of Non-Consecutive Holding Registers
Command Message
Byte
0 Slave address
1 Function code
2
Subfunction
code
3
4
Data Quantity
5
6
Holding register
1 No.
7
8
Holding register
2 No.
9
10
CRC-16
11
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.
Table 6.8 shows example messages when you write the frequency reference and torque limit from the drive for
slave 1. Table 6.8 uses these specified holding registers data for the examples.
• 0002H: Frequency Reference = 60.00 Hz (6000 = 1770H)
• 0004H: Torque Limit = 150.0% (1500 = 05DCH)
When you rewrite the parameter value with the write command through the H5-11 [Comm ENTER Command
Mode] setting, you must use the Enter command to save and enable the contents of the changes. Refer to
Comm ENTER Command Mode on page 656
Table 6.8 Message Example When Writing to Non-Consecutive Holding Registers
Command Message
Byte
0 Slave address
1 Function code
2
Subfunction
code
3
4
Data Quantity
5
216
Setting Data
(Hex.)
01
67
Upper 01
Subfunction
Lower 0D
Upper 00
Lower 02
Upper 00
Holding register
Lower 24
Upper 00
Holding register
Lower 28
Upper 8B
Lower 29
and
Setting Data
(Hex.)
01
67
Upper 01
Subfunction
Lower 0E
Upper 00
Data Quantity
Lower 02
Response Message (When Normal)
Setting Data
(Hex.)
Slave address
Function code
Upper
code
Lower
Upper
Byte No.
Lower
Upper
1 data
Lower
Upper
2 data
Lower
Upper
CRC-16
Lower
Enter Command on page 217
Response Message (When Normal)
Setting Data
(Hex.)
Slave address
Function code
Upper
code
Lower
Upper
Lower
Response Message (When There is a Fault)
01 Slave address
67 Function code
01 Error code
0D Upper
CRC-16
00 Lower
04
17
70
03
E8
47
ED
for more information.
Response Message (When There is a Fault)
01 Slave address
67 Function code
01 Error code
0E Upper
CRC-16
00 Lower
02
YASKAWA SIEPC71061753A GA500 Technical Manual
Setting Data
(Hex.)
01
E7
02
EA
31
-
-
-
-
-
-
-
H5-11:
Setting Data
(Hex.)
01
E7
02
EA
31
-