Syntax of the read and write commands – Festo Контроллеры двигателя SFC-LAC User Manual
Page 169
![background image](/manuals/464475/169/background.png)
B. Supplementary information
B−7
Festo GDCP−SFC−LACI−IO−EN en 0812NH
Syntax of the read and write commands
Acc
1)
Command
Reply
W
W
2)
=IIIISS:<value><CR>
=IIIISS:<Value>
<PS><CR>
=IIIISS:<Value> <PS> <CR>
R
R
2)
?IIIISS<CR>
2)
?IIIISS
<PS><CR>
=IIIISS:<Value> <PS> <CR>
1)
Access: W = write, R = read
2) When checksum checking is activated (Object 20F3h)
Tab. B/2: Syntax of a CI command / CI reply
Syntax
Explanation
= ", ?"
Initial character for write or read commands
IIII
Index in 4 hexadecimal digits
SS
Subindex in 2 hexadecimal digits
If the addressed object does not have subindices,
<00> is specified.
:"
Separating character
<Value>
Data in a format depending on data type
<PS>
Checksum in 2 hexadecimal digits
<CR>
End character <Carriage Return> ($0D)
Tab. B/3: Syntax elements of a CI command / CI reply