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7.3. RS-232C Communication
7.3.4. Daisy Chain Communication
7.3.4.5. Operation
u Selection of Driver Unit to Communicate
l In daisy-chain mode, the RS-232C terminal is capable of communication through only one
Driver Unit at a time.
l Use the AX command to select one of Driver Units connected for daisy-chain communication.
！ Caution : Do not select any Drive Unit that is not connected. Otherwise,
:AX2
ACC. AX2
:_
l An axis selected for communication may be checked by issuing a "?AX" command. The axis is
displayed in the same manner as it is selected.
:?AX
ACC. AX2
:_
Example of Daisy-chain communication
Figure 7-56: Example of Daisy chain
operation may hang up. To return to the normal state in such a case,
press the BS key, then select the number of a connected Driver Unit.
Select axis 1
Check
acknowledgment
message.
NO
YES
Set axis 1 parameter.
Select axis 3
Check
acknowledgment
message.
NO
YES
Set axis 3 parameter.
Select axis 2
Select a new axis for communication (axis No. 2).
Acknowledgment
Current axis for communication
¬ AX1 command
Acknowledgment for
ACC, AX1
Example:
IR100 (Move 100 pulses.)
¬ AX3 command
Acknowledgment for
ACC, AX3
Example:
IR300 (Move 300 pulses.)
¬ AX2 command
— 7-70 —
B
B
3
3
t
t
y
y
p
p
e
e
B
B
5
5
t
t
y
y
p
p
e
e
2
3
t
y
p
e
2
5
t
y
p
e
2
3
t
y
p
e
2
5
t
y
p
e
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Troubleshooting
