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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 set-
ting 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). See Figure 9.
Set switch 128 to ON only for expansion modules on
3.
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 expansion module with
switch 128 set to ON to an active (hard-wired) SA
or FC bus. When a expansion module 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 expansion module is
disconnected or switch 128 is set to Off.
Refer to the WNC1800/ZFR182x Pro Series Wireless Field Bus
System Product Bulletin (LIT-12012320) for more informa-
tion on device addresses in wireless applications.
4.
Set a unique and sequential device address for each
of the expansion modules 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 expansion modules do not need
to be physically connected on the bus in their numerical
device address order.
5.
Write each expansion module's device address on
the white label below the DIP switch block on the
expansion module's cover.
Table 6 describes the FC bus and SA bus devices
addresses for Johnson Controls MS/TP communications
bus applications.
Refer to the MS/TP Communications Bus Technical Bulletin
(LIT-12011034) 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
Use on description
address
0
Reserved for FC Bus Supervisory Controller (not for
(Switch 128
use on controllers).
Off)
1 to 3
Reserved for peripheral devices (not for use on
(Switch 128
controllers).
Off)
4 to 127
Used for MS/TP master devices (controllers) that
(Switch 128
are hardwired to an SA Bus or FC Bus.
Off)
Table 6: SA/FC bus device address descriptions
Device
Use on description
address
Reserved addresses for wired subordinate devices
(not for use on controllers).
0 to 3
Note: Metasys field controllers ship with
(Switch 128
switch 128 ON and the remaining address
ON)
switches off rendering the controllers wired
devices, which do not operate on MS/TP
buses.
Valid for MS/TP Master controllers on wireless FC
Buses only.
Note: Do not connect a controller with switch
4 to 127
128 ON to an active (hard-wired) SA or
(Switch 128
FC bus. When a controller with switch 128
ON)
ON and a device address from 4 to 127 is
connected to a wired field bus, the entire bus
is rendered inoperable until the controller is
disconnected or switch 128 is set to Off.
Removing the Expansion Module cover
Important: Electrostatic discharge can damage
expansion module components. Use proper
electrostatic discharge precautions during
installation, setup, and servicing to avoid damaging
the expansion module.
Important: Disconnect all power sources to
the expansion module before removing cover
and changing the position of any jumper or the
EOL switch on the expansion module. Failure to
disconnect power before changing a jumper or
EOL switch position can result in damage to the
expansion module and void any warranties.
The expansion module 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 expansion module cover:
1.
Place your fingernails under the two cover lift tabs
(Figure 1) on the sides of the housing cover and
gently pry the top of the cover away from the base to
release the cover from the two upper latches.
2.
Pivot the top of the cover further to release it from
the lower two latches.
3.
Replace the cover by placing it squarely over the
base, and then gently and evenly push the cover
on to the latches until they snap into the latched
position.
IOM3711 Input/Output Module Installation Guide
15
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