6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
B–63173EN/03
128
An extended unit or units may be omitted as shown below by changing
the setting of the rotary switch on the appropriate extended unit.
Basic unit 1Basic unit
Basic unit 1
Basic unit 2
Basic unit 3
Basic unit
Basic unit 1
Basic unit 2
Basic unit 3
Basic unit
Basic unit 1
Basic unit 2
Basic unit 3
Omitting extended unit 1 Omitting extended unit 2 Omitting extended units 1 and 2
Changing the setting of the rotary switch
In an extended unit, a rotary switch is located as shown in the figure
below. To change the setting of the rotary switch, use a slotted
screwdriver with a blade width of about 2.5 mm.
The positions of the rotary switch are described below.
Position
Indication on
the switch
Description
0 0 Default position. The rotary switch is set to this
position prior to shipment.
Set the rotary switch to this position when not
omitting an extended unit.
1 – To omit one extended unit to be mounted on the
preceding stage, set the rotary switch to this position
2 2 To omit two extended units to be mounted on the
preceding stage, set the rotary switch to this position.
3 – Not allowed.
4 to F 4, –, 6, –,
8, –, A, –,
C, –, E, –,
Not allowed.
6.7.10
Omitting Units