Read Commands - Airzone Modbus Bedienungsanleitung

•
Write to multiple registers
Byte
0
1
2
3
4
5
6
7
5 + 2·N
6 + 2·N
7 + 2·N
8 + 2·N
Provided there is no error, the response will be:
Byte
0
1
2
3
4
5
6
7

Read commands

•
Request
Byte
Secondary address (1-247) (0:
0
Broadcast)
1 Read registers (3/4)
2
Start register address
3
4
Number of registers to read (N)
5
6
7
Secondary address (1-247) (0: Broadcast)
Write to multiple registers (16)
Start register address
Number of registers to write (N)
Number of total write bytes (2·N)
Data to write to register 1
Data to write to register N
Secondary address (1-247) (0: Broadcast)
Write to multiple registers (16)
Start register address
Number of registers to write (N)
Field
CRC
Field
...
CRC
Field
CRC
•
Response
Byte
Secondary address (1-247) (0:
0
1
2 Number of response bytes (2·N)
3
Data to read from register 0
4
3 + 2·N
Data to read from register N
4 + 2·N
5 + 2·N
6 + 2·N
Field
Broadcast)
Read registers (3/4)
...
CRC
EN
19