Setup And Adjustments - Johnson Controls IOM3731 Installation Manual

Table 6: Termination details
Type of field device
Incremental Control to
Actuator (Switch High,
Externally Sourced)

Setup and Adjustments

Setting the device addresses
Metasys field controllers are master devices on MS/TP
(SA or FC) buses. Before operating 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 1).
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: Metasys field 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, 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 Metasys field
controllers:
1. Set all of the switches on the address DIP switch
block (128 through 1) to off.
10 IOM3731 Input/Output Module Installation Guide
Type of Input/Output
BO
Termination diagrams
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 7 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).
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.
Refer to the WNC1800/ZFR182x Pro Series Wireless Field
Bus System Technical Bulletin (LIT-12012356) or the
ZFR1800 Series Wireless Field Bus System Technical Bulletin
(LIT-12011295) 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 MS/TP Communications Bus Technical Bulletin
(LIT-12011034) for more information on controller device
addresses and how to set them on MS/TP buses.