Setup and adjustments
Setting the device addresses
FX-PC Series controllers are master devices on MS/TP (SA or FC) buses. Before operating FX-PCG
controllers on a bus, you must set a valid and unique device address for each controller on the bus.
You set a controller's device address by setting the positions of the switches on the DIP switch block
at the top of the controller (Figure 3) . Device addresses 4 through 127 are the valid addresses for
these controllers.
The DIP switch block has eight switches numbered 128, 64, 32, 16, 8, 4, 2, and 1. Switches 64
through 1 are device address switches. Switch 128 is a mode switch that enables a controller to
operate on a ZFR/ZFR Pro Series Wireless Field Bus. Switch 128 must be set to off for all hard-wired
SA and FC bus applications. Set switch 128 to ON for wireless FC bus applications only.
Figure 9: Device address DIP switch block set to address 21
Note: FX-PCGs 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, but will not interfere
with bus operation. Set a valid and unique device address on the controller before applying
power to the controller on the bus.
To set the device addresses on FX-PCG:
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 through 1) to ON, so that the sum of the
switch numbers set to ON equals the intended device address. See Table 7.
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 a ZFR/ZFR Pro 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.
Note: Refer to the FX-ZFR Series Wireless 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.
FX-PCG26 General Purpose Programmable Controller Installation Instructions26
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