Note:
See Table 3 to determine wire size and
cable lengths for cables.
Note:
The SA Bus and FC Bus wiring
recommendations in this table are for MS/
TP bus at 38,400 baud. For more information,
refer to the
MS/TP Communications Bus Technical
Bulletin (LIT-12011034)
.
Termination details
A set of Johnson Controls termination diagrams
provides details for wiring inputs and outputs to the
controllers. See the following table in this section for
the applicable termination diagram.
Table 5: Termination details
Type of device
Type of Input/
Output
Termination diagrams
Dry Contact (Binary Input)
BI
Setup and Adjustments
Setting the device address
About this task:
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.
IOM3723 Input/Output Module Installation Guide
9
