33
Control circuit
■
Description of switches
Indication
SW name
Description
Ai1
(SW1)
Analog input 1 switch
Switches input specification of analog input 1 (Ai1 terminal).
10V: Voltage input is available.
20mA: Current input is available.
Ai2
(SW2)
Analog input 2 switch
Switches input specification of analog input 2 (Ai2 terminal).
10V: Voltage input is available.
20mA: Current input is available.
Ao1
(SW3)
Analog output 1 switch
Switches output specification of analog output 1 (Ao1 terminal).
10V: Output changes to voltage output.
20mA: Output changes to current output.
Ao2
(SW4)
Analog output 2 switch
Switches output specification of analog output 2 (Ao2 terminal).
10V: Output changes to voltage output.
20mA: Output changes to current output.
P.SEL
(SW5)
Switching the method of
power supply to the input
terminals
Switches the method of power supply to the input terminals.
IN: Drives the input terminals using the internal power supply.
EX: Use an external power supply to drive input terminals.
(In the case of EX, a power supply is required between the input terminals
and COM.)
SRC/SINK
(SW6)
Switch of sink/source for
the input terminals
Switches the sink/source logic for input terminals.
This switch is enabled when SW5 is IN.
SINK: Enables sink logic.
SRC: Enables source logic.
Control circuit terminal area
S
W
4
S
W
3
S
W
2
S
W
1
S
W
5
S
W
6
10V
20mA
10V
20mA
10V
20mA
10V
20mA
IN
EX
SINK
SRC
Ao2
Ao1
Ai2
Ai1
P.SE
(SW4) (SW3) (SW2) (SW1) (SW5) (SW6)
(SW4) (SW3) (SW2) (SW1) (SW5) (SW6)
* Using a switch under power-on condition may cause
failure. Use the switch only after turning off the
power and confirming that the POWER lamp on the
operator keypad is off.
(Factory setting)