IAI America ROBO Cylinder Series - Manual (Page 94)

5. Modbus RTU
86
Modbus
(4) Query sample
A sample query that output port (address 9004
H
) of a controller of axis No. 0 is shown below.
z Query (silent intervals are inserted before and after the query)
01 03 90 04 00 01 E8 CB
Field RTU mode
8-bit data
Start Silent interval
Slave address [H] 01
Function code [H] 03
Start address [H] 9004
Number of registers [H] 0001
Error check [H] E8CB (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 68 00 97 84
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] 68 00
Error check [H] 9784 (in accordance with CRC calculation)
End Silent interval
The input data area address is “6800”
H
, o Convert into binary number
“0110100000000000.”
n n
INT15 -------------------- INT 1
Note The data of the response example is simply an example and will vary depending on
various conditions.