23
22
Display/ Switch Setting (continued)
Troubleshooting
Overall system
1
2
3
Remedy/ Disposal
•Check the power for output (24 VDC) is supplied.
•Check the branch cable is connected to SI unit.
•Check the LED for power supply (PWR) and the
LED for communication (COM) at SI unit are ON.
•Ensure output branch current does not exceed the
specification range.
•Program it after checking the wiring specification
of manifold block assembly.
•Check the power for input and controlling GW
(24 VDC) is supplied.
•Check the input unit indication LED is ON.
•Ensure input branch current does not exceed the
specification range.
•Check the connection of UNLIT COM port branch
to input unit.
4
COM A-D is
not LIT
Signals
cannot be
received
even with a
sensor
Solenoid
valve is not
working
Valve is not
working as
program
directs
No.
Item
Station setting
No.2
The max. available number
of I/O point
2 station-occupied
OFF
3 station-occupied
ON
No.3
ON
OFF
Input 32/ Output 32
Input 64/ Output 64
Setting of the number of stations occupied
(Switch No.2 to 3)
The setting of the number of stations occupied is performed with
switch No.2 to 3.
3 stations are occupied at shipment.
Mode
No.4
Number of branch
A
OFF
B
ON
16 points per port
8 points per port
Valid port
COM A and B
COM A to D
Mode setting (Switch No.4)
Mode setting of each port is available only when 2 stations are
occupied.
No.4 is used for mode setting.
The default setting is mode A.
