Hitachi EH-150 Series - Page 106

Chapter 6 Communication Mode
6 - 64
Modbus Slave
(3) Example
Read the status of Y110-Y123 (14 points) in the slave 03.
Query
Response
Field name
Example
(HEX)
Field name
Example
(HEX)
Slave address
0 3
Slave address
0 3
Function code
0 1
Function code
0 1
Coil head address (upper)
0 1
Number of data bytes
0 2
Coil head address (lower)
0 A
Coil data (upper)
C B
Number of coils (upper)
0 0
Coil data (lower)
0 A
Number of coils (lower)
0 E
Error check
[CRC]
Error check
[CRC]
Data in Y110 – Y117 is stored in high byte (LSB = Y110), and data in Y118 –Y123 is stored in low byte.
Y110
OFF
ON
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
OFF
OFF
Y123
OFF
ON
ON
OFF
OFF
Y131
OFF
OFF
OFF
OFF
OFF
OFF
Y115
Y100
Y116
OFF
OFF
ON
ON
ON
B
A
0
C
ON