Setup And Adjustments; Setting The Device Address - Johnson Controls MS-IOM3723 Installation Manual

Table 5: Termination details
Type of device
Dry Contact (Binary Input)

Setup and Adjustments

Setting the device address

Metasys expansion modules are master devices on MS/
TP (SA or FC) buses. Before operating an expansion
module on a bus, you must set a valid and unique device
address for each expansion module on the bus. You set
an expansion module's device address by setting the
positions of the switches on the DIP switch block at the
top of the expansion module . Device addresses 4 through
127 are the valid addresses for these expansion modules.
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 ZFR/ZFR Pro Series Wireless
Field Bus. Switch 128 must be set to off for all hard-wired
SA and FC bus applications.
Figure 8: Device address DIP switch block set to
address 21
Note: Metasys 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 do not interfere
with bus operation. Set a valid and unique device
address on the expansion module before applying
power to the expansion module on the bus.
To set the device addresses on Metasys expansion
modules, complete the following steps:
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, and ensure that switch 128 remains set to
OFF.
8 IOM3723 Input/Output Module Installation Guide
Type of Input/
Termination diagrams
Output
BI
Note: To do this, 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 switches 16, 4, and 1 to ON (16+4+1= 21) and all
other switches to OFF.
3. 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.
Note: 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.
4. Write each expansion module's device address on
the white label below the DIP switch block on the
expansion module's cover.
The following table describes the FC bus and SA bus
device addresses for Johnson Controls MS/TP communica-
tions bus applications.
Table 6: SA/FC bus device address descriptions
Device Address Use on Descriptions
Reserved for FC Bus Supervisory Controller (not
0
(Switch 128 Off)
for use on controllers or expansion modules).
Reserved for peripheral devices (not for use on
1-3
(Switch 128 Off)
controllers or expansion modules).
Used for MSTP master devices (controllers and
4-127
expansion modules) that are hardwired to an
(Switch 128 Off)
SA bus or FC bus.
Table 7: 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)