Writing To Multiple Registers - Omron JZA User Manual

C.9 Message Examples
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 60.0 Hz for the slave 1 drive.
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.
198
Response Message (normal)
01H Slave Address
10H Function Code
00H
Starting No.
01H
00H
Data Quantity
02H
04H
CRC-16
00H
01H
02H
58H
63H
39H
01H Slave Address
10H Function Code
Upper 00H Error Code
Lower 01H
CRC-16
Upper 00H
Lower 02H
Upper 10H
Lower 08H
Response Message (fault)
Upper
Lower
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
01H
90H
02H
CDH
C1H