YASKAWA
TM.iQp.02 iQpump Drive Programming Manual
85
Modbus Function Code Details
◆
Reading/Holding Register Contents (03H)
Read the contents of the storage registers only for the specified number of registers. The addresses must be consecutive, starting from a
specified start register. The data content of the storage register are separated into high bytes and low bytes.
The following table shows message examples when reading status signals, error details, data link status, and frequency references from
the slave 2 Drive.
Figure 81 Function Code 03H Message Example
◆
Write In Single Holding Register (06H)
Figure 82 Function Code 06H Message Example
Command Message
Response Message
(During Normal Operation)
Response Message
(During Error)
Slave Address
02H
Slave Address
02H
Slave Address
02H
Function Code
03H
Function Code
03H
Function Code
83H
Start
Register
High
Byte
00H
Data quantity
08H
Error code
03H
Low
Byte
20H
First Storage
Register
High
Byte
00H
CRC-16
High
Byte
F1H
No. of
Registers
High
Byte
00H
Low
Byte
65H
Low
Byte
31H
Low
Byte
04H
Second
Storage
Register
High
Byte
00H
CRC-16
High
Byte
45H
Low
Byte
00H
Low
Byte
F0H
Third
Storage
Register
High
Byte
00H
Low
Byte
00H
Fourth
Storage
Register
High
Byte
01H
Low
Byte
F4H
CRC-16
High
Byte
AFH
Low
Byte
82H
Command Message
Response Message
(During Normal Operation)
Response Message
(During Error)
Slave Address
01H
Slave Address
01H
Slave Address
01H
Function Code
06H
Function Code
06H
Function Code
86H
Register
Address
Upper
00H
Register
Address
Upper
00H
Error code
21H
Lower
01H
Lower
01H
CRC-16
Upper
82H
Setting Data
Upper
00H
Setting Data
Upper
00H
Lower
78H
Lower
01H
Lower
01H
CRC-16
Upper
98H
CRC-16
Upper
98H
Lower
0BH
Lower
0BH
Summary of Contents for CIMR-P7U-2011-107
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