Writing To Multiple Registers - YASKAWA V1000 Technical Manual

u

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 Enter Command on page 428
Command Message
Slave Address
Function Code
Upper
Starting No.
Lower
Upper
Data Quantity
Lower
Number of Bytes
Upper
Starting Data
Lower
Upper
Next Data
Lower
Upper
CRC-16
Lower
Note: For the number of bytes in the command message, take double the number of the data quantity.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Refer to H5-11: Communications Enter Function Selection on page 410
for detailed descriptions.
Response Message (normal)
01H Slave Address
10H Function Code
00H Upper
Starting No.
01H Lower
00H Upper
Data Quantity
02H Lower
04H Upper
CRC-16
00H Lower
01H
17H
70H
6DH
67H
Response Message (fault)
01H Slave Address
10H Function Code
00H Error Code
01H
CRC-16
00H
02H
10H
08H
C.9 Message Examples
01H
90H
02H
Upper CDH
Lower C1H
and
C
417