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 Wireless Field Bus System Technical Bulletin (LIT-12011660)
for more informa-
tion 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.
Table 6 describes the FC bus and SA bus devices addresses for Johnson Controls MS/TP communica-
tions bus applications.
Refer to the
FX-PC Series ControllersMS/TP Communications Bus Technical Bulletin (LIT-12011670)
or
MS/
TP Communications Bus for BCPro 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
Device address
Use on description
0
(Switch 128 Off)
Reserved for FC Bus Supervisory Controller (not for use on controllers).
1 to 3
(Switch 128 Off)
Reserved for peripheral devices (not for use on controllers).
4 to 127
(Switch 128 Off)
Used for MS/TP master devices (controllers) that are hardwired to an SA Bus
or FC Bus.
0 to 3
(Switch 128 ON)
Reserved addresses for wired subordinate devices (not for use on controllers).
Note:
FX-PC controllers ship with switch 128 ON and the remaining
address switches off rendering the controllers wired subordinate devices,
which do not operate on MS/TP buses.
4 to 127
(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.
Removing the Controller cover
About this task:
23
FX-PCX17 and FX-PCX27 Expansion Input/Output Module Installation Instructions
