Omron CQM1H - 08-2005, Operation Manual

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3-1 SYSMAC BUS Cable Connections
Connect VCTF 0.75 x 2 C SYSMAC BUS cables to the CQM1-LK501 I/O LInk
Unit as shown in the following.
Connect the positive signal line
from the Master.
Connect the negative signal line
from the Master.
Connect the positive signal line to
the next Slave (see note).
Connect the negative signal line to
the next Slave (see note).
A
0
A
1
A
2
A
3
B
0
B
1
B
2
B
3
B
4
Note Nothing is connected to these terminals in the case of the terminator.
Connect the Master and Slaves as described in the following.
The positive terminal of the Master must be connected to the positive terminal of
the Slave and the negative terminal of the Master must be connected to the neg-
ative terminal of the Slave, and between Slaves, the positive terminals must be
connected together and the negative terminals must be connected together as
shown in the above diagram.
The end Slave of the system must be the terminator of the system. Any other
Slave must not be the terminator.
Remote I/O Master
CQM1-LK501 I/O LInk Unit
Other Slave
Terminator setting
+
–
+
–
+
–
+ –
Note 1. Connect the terminals with crimp-style terminals and M3 terminal screws
that are also used for CQM1H/CQM1 I/O Units.
2. Terminals B
0
and B
2
are short-circuited internally. Terminals B
1
and B
3
are
also short-circuited internally.
3. Be sure to turn all the Slaves on before turning on the Master. Any Slave
turned on after the Master is turned on will not be recognized by the Master.
4. To satisfy the EC directives (low-voltage directives), provide reinforced in-
sulation or double insulation for the power supply when RUN OUTPUT is
used.
SYSMAC BUS Cable Connections
Section 3-1