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C.8 Message Examples
570
YASKAWA ELECTRIC
SIEP C710636 02B YASKAWA U1000 Technical Manual
◆
Writing to Multiple Registers
Function code 10h allows the user to write multiple drive MEMOBUS/Modbus registers with one message. This process
works similar to reading registers, i.e., the address of the first register that is to be written and the data quantity must be
set in the command message. The data to be written must be consecutive so that the register addresses are in order,
starting from the specified address in the command message. The data order must be high byte, then lower byte.
The following table shows an example of a message where a forward operation has been set with a frequency reference
of 60.00 Hz for the slave 1 drive.
If parameter values are changed using the Write command, depending on the setting of H5-11, an Enter command will be
necessary to activate the data or save them.
Refer to H5-11: Communications ENTER Function Selection on page 564
and
for detailed descriptions.
Note:
For the number of bytes in the command message, take double the number of the data quantity.
Command Message
Response Message (normal)
Response Message (fault)
Slave Address
01H
Slave Address
01H
Slave Address
01H
Function Code
10H
Function Code
10H
Function Code
90H
Starting No.
Upper
00H
Starting No.
Upper
00H
Error Code
02H
Lower
01H
Lower
01H
CRC-16
Upper
CDH
Data Quantity
Upper
00H
Data Quantity
Upper
00H
Lower
C1H
Lower
02H
Lower
02H
Number of Bytes
04H
CRC-16
Upper
10H
Starting Data
Upper
00H
Lower
08H
Lower
01H
Next Data
Upper
17H
Lower
70H
CRC-16
Upper
63H
Lower
39H
SIEP_C710636_02B_1_0.book 570 ページ 2015年11月25日 水曜日 午後4時56分