1. Set all of the switches on the address DIP switch
block (128 through 1) to Off.
2. Set one or more of the seven address switches (64
though 1) to ON, so that the sum of the switch
numbers set to ON equals the intended device
address. See Table 6 for valid device addresses.
Set the highest number switch that is less than or
equal to the intended device address to ON. Then
continue setting lower numbered switches until the
total equals the intended address. For example, if the
intended device address is 21, set switch 16 to ON
first, then set switch 4 ON, followed by switch 1
(16+4+1= 21).
3. Set switch 128 to ON only for controllers on an
FX-ZFR Series Wireless Field Bus application. For
all hard-wired SA and FC bus applications, ensure
that switch 128 is set to Off.
Note: Do not connect a controller with switch 128
set to ON to an active (hard-wired) SA or FC
bus. When a controller with switch 128 set to
ON and a device address from 4 to 127 is
connected to a wired field bus, the entire field
bus is rendered inoperable until the controller
is disconnected or switch 128 is set to off.
Refer to the FX-ZFR Series Wirless Field Bus System
Technical Bulletin (LIT-12011660) for more
information on device addresses in wireless
applications.
4. Set a unique and sequential device address for each
of the controllers connected on the SA or FC bus
starting with device address 4.
To ensure the best bus performance, set sequential
device addresses with no gaps in the device address
range (4, 5, 6, 7, 8, 9, and so on). The controllers do
not need to be physically connected on the bus in
their numerical device address order.
5. Write each controller's device address on the white
label below the DIP switch block on the controller's
cover.
Refer to the FX-PC Series Controllers MS/TP
Communications Bus Technical Bulletin
(LIT-12011670) or MS/TP Communications Bus for
BCM System Technical Bulletin (LIT-12011908) for
more information on controller device addresses and
how to set them on MS/TP buses.
Table 6: SA/FC Bus Device Address Descriptions
Use on DescriptionDevice
Address
Reserved for FC Bus Supervisory Controller
(not for use on controllers).
0
(Switch
128 Off)
Reserved for peripheral devices (not for use
on controllers).
1 to 3
(Switch
128 Off)
Used for MS/TP master devices (controllers)
that are hardwired to an SA bus or FC bus.
4 to 127
(Switch
128 Off)
Reserved addresses for wired slave devices
(not for use on controllers).
Note: Controllers ship with switch 128 ON and
the remaining address switches off rendering
the controllers wired slave devices, which do
not operate on MS/TP buses.
0 to 3
(Switch
128 ON)
Valid for MS/TP Master controllers on wireless
FC Buses only.
Note: Do not connect a controller with switch
128 ON to an active (hard-wired) SA or FC
bus. When a controller with switch 128 ON
and a device address from 4 to 127 is
connected to a wired field bus, the entire field
bus is rendered inoperable until the controller
is disconnected or switch 128 is set to Off.
4 to 127
(Switch
128 ON)
Removing the Controller Cover
Important: Electrostatic discharge can damage
controller components. Use proper
electrostatic discharge precautions during
installation, setup, and servicing to avoid
damaging the controller.
Important: Disconnect all power sources to the
controller before removing cover and
changing the position of any jumper or the
EOL switch on the controller. Failure to
disconnect power before changing a jumper
or EOL switch position can result in damage
to the controller and void any warranties.
The controller cover is held in place by four plastic latches
that extend from the base and snap into slots on the
inside of the housing cover.
To remove the controller cover:
1. Place your fingernails under the two cover lift tabs
(Figure 3) on the sides of the housing cover and
10FX-PCX3721 Expansion Input/Output Module Installation Instructions
