6 Programming Features
147
• Writing to Several Holding Registers (10H)
Specified data are written into the several specified holding registers
from the specified number, respectively. Written data must be
arranged in a reference message in the order of the holding register
numbers: from upper eight bits to lower eight bits.
Example:
Set forward run at frequency reference 60.0 Hz to slave 1 V7AZ from
the PLC.
Reference Message
Response Message
(at Normal Operation)
Response Message
(at Fault Occurrence)
Slave address 01H Slave address 01H Slave address 01H
Function code 10H Function code 10H Function code 90H
Start
number
Upper 00H
Start
number
Upper 00H Error code 02H
Lower 01H Lower 01H
CRC-16
Upper CDH
Quantity
Upper 00H
Quantity
Upper 00H Lower C1H
Lower 02H Lower 02H
Number of data* 04H
CRC-16
Upper 10H
First
data
Upper 00H Lower 08H
Lower 01H
Next
data
Upper 02H
Lower 58H
CRC-16
Upper 63H
Lower 39H
* Sets twice as large as the actual number.
To Next Page
Loading...
Need help?
General