IAI America ROBO Cylinder Series - Manual (Page 273)

6. Modbus
ASCII
265
Modbus
(4) Query sample
A sample query that moves a controller of axis No. 0 to start position 2 is shown below.
Sample start position setting
Fig.6.2
Query
First time 01 05 04 1D 00 00 D9 --- Write 0000
H
to set the edge
Second time 01 05 04 1D FF 00 DA --- Movement command
Field ASCII mode 8-bit data Converted ASCII
code data [H]
Start ‘:’ 3A
Slave address [H] ‘0’, ‘1’ 3031
Function code [H] ‘0’, ‘5’ 3035
Start address [H] ‘0’, ‘4’, ‘1’, ‘D’ 30343044
Changed data [H] First time: ‘0’, ‘0’, ‘0’, ‘0’
Second time: ‘F’, ‘F’, ‘0’, ‘0’
30303030
46463030
Error check [H] First time: ‘D’, ‘9’ (In accordance with LRC
calculation)
Second time: ‘D’, ‘A’ (In accordance with
LRC calculation)
4439
4441
End ‘CR’, ‘LF’ 0D0A
If the change is successful, the response message will be the same as the query.
(5) Start address
Address Symbol Name Function
0418 ST7 Start position 7 Move to position 7
0419 ST6 Start position 6 Move to position 6
041A ST5 Start position 5 Move to position 5
041B ST4 Start position 4 Move to position 4
041C ST3 Start position 3 Move to position 3
041D ST2 Start position 2 Move to position 2
041E ST1 Start position 1 Move to position 1
041F ST0 Start position 0 Move to position 0