IAI America ROBO Cylinder Series - Manual (Page 98)

5. Modbus RTU
90
Modbus
(4) Query sample
A sample query that reads the device status (address 9005
H
) of a controller with axis No. 0
is shown below.
z Query (silent intervals are inserted before and after the query)
01 03 90 05 00 01 B9 0B
Field RTU mode
8-bit data
Start Silent interval
Slave address [H] 01
Function code [H] 03
Start address [H] 9005
Number of registers [H] 0001
Error check [H] B90B (in accordance with
CRC calculation)
End Silent interval
The response to the query is as follows.
z Response (silent intervals are inserted before and after the response)
01 03 02 70 98 9C 2E
Field RTU mode
8-bit data
Start Silent interval
Slave address [H] 01
Function code [H] 03
Number of data bytes [H] 02 (2 bytes = 1 register)
Data 1 [H] 70 98
Error check [H] 9C2E (in accordance with CRC calculation)
End Silent interval
Note The data of the response example is simply an example and will vary depending on
various conditions.