IAI America ROBO Cylinder Series - Manual (Page 139)

5. Modbus RTU
131
Modbus
(4) Query sample
A sample query that switches the operation of a controller of axis No. 0 to inching is shown below.
Query (silent intervals are inserted before and after the query)
01 05 04 11 FF 00 DD 0F
Field RTU mode
8-bit data
Start Silent interval
Slave address [H] 01
Function code [H] 05
Start address [H] 0411
Changed data [H] FF00
Error check [H] DD0F (in accordance with
CRC calculation)
End Silent interval
If the change is successful, the response message will be the same as the query.