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Parallel I/O interface
3 Controller
<Reference> The example of connection with our PLC
Table 3-17 ： Connection with a Mitsubishi PLC (Example of sink type)
Table 3-18 ： Connection with a Mitsubishi PLC (Example of source type)
60mA
(+24/+12V)
Output
Fuse
(24G/12G)
(COM)
QX41
(Mitsubishi programmable
controller)
QY41P
(Mitsubishi programmable
controller)
+24V
COM
X
Y
24V
…
…
Input
Parallel I/O interface
（Output）
(Input)
3.3K
Output
Input
External
power supply
24G
COM
External
power supply
24V
…
…
<Sink>
*The input/output circuit external
power supply (24 VDC) must be
prepared by the customer.
Note) In the customer's system, do not
ground the + side of 24V power
supply prepared by customer for
connect to the controller.
(related with emergency stop and
parallel input/output) If it
connects with the controller
under the condition that the +
side is grounded, it will lead to
failure of controller.
<Source>
60mA
(+24/+12V)
Output
Output
Fuse
(24G/12G)
(COM)
QX41
24G
+24V
COM
External
power supply
X
Y
24V
24V
(Output)
(Input)
3.3K
External
power supply
Input
Input
…
…
…
…
QY81P
Parallel I/O interface
(Output)
(Mitsubishi programmable
controller)
(Mitsubishi
programmable
controller)
*The input/output circuit external
power supply (24 VDC) must be
prepared by the customer.
Note) In the customer's system, do
not ground the + side of 24V
power supply prepared by
customer for connect to the
controller. (related with
emergency stop and parallel
input/output) If it connects
with the controller under the
condition that the + side is
grounded, it will lead to
failure of controller.