— 7-58 —
B
B
3
3
t
t
y
y
p
p
e
e
B
B
5
5
t
t
y
y
p
p
e
e
7.3. RS-232C Communication
7.3.2. Communication Procedure
2
2
3
3
t
t
y
y
p
p
e
e
2
2
5
5
t
t
y
y
p
p
e
e
7.3.2.2. Command Entry
l A communication command shall consist of
“a command (character string) + data (if necessary) + carriage return code (0D
H).”
l If the velocity gain is to be set to 0.5, for example, “VG0.5” should be entered by adding data of
0.5 to a VG command. The characters of this command with data will be transmitted to the
Driver Unit as shown below.
Press the ENT key if the handy terminal
FHT11 is used.
V code (56
H)
G code (47
H)
0 code (30
H)
. code (2E
H)
5 code (35
H)
Carriage return code (0D
H)
l Every time a character is input, the Driver Unit echoes the character back to the terminal. (The
Driver Unit returns the same character it received.)
l However, the Driver Unit converts carriage return code to
“carriage return code (0D
H) + line feed code (0AH),” then returns it to the terminal.
l When a carriage return code is input, the Driver Unit decodes a character string it has received
(VG0.5 in the example above) and executes it. Therefore, a command won’t be executed unless
it ends with a carriage return code.
l If the Driver Unit can decode an entered command, it returns “: (prompt)” immediately after the
line feed code.
l If it receives an internal data readout command, etc., it returns the data before “: (prompt).”
:VG0.5
:_
Entered command.
Waitin
for the next command.
Input (to Driver Unit)
0DH5 . 0 G V
Echo backe (from Driver Unit)
: 0AH 0DH5 . 0 G V
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