6.12 DIO Expansion Card
6-229
Chap. 6
CONTROL OPTIONS
(1) PCB switch
Figure 7-41 shows approximate positions of the switches seen from
the front side of the PCB.
• Use SW1 on the PCB of the optional expansion card to select
SINK or SOURCE control input. Not control output switching is
available.
• Use SW2 on the PCB of the optional expansion card to select
DIOA or DIOB.
Table 6.12.2
Switch Factory default
SW1 SINK
SW2 DIOA
Figure 6.12.3
(2) Input circuit
The respective circuit configurations below show examples of SW1 set to SINK and SOURCE.
In these cases, 24-V power is supplied from the optional expansion card. (P24: 24 V; M24: Ground)
Necessary
contact capacity:
3 mA at 24 VDC
Necessary
contact capacity:
3 mA at 24 VDC
SINK SOURCE
X11X11
M24P24
CMCM
P24M24
Figure 6.12.4
SW2
DIOADIOB
EP-4223-
SINKSOURCE
Connector
SW1
OPC-VG1-DIO
Power supply
harness
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