Setup And Adjustments; Setting The Device Addresses - Johnson Controls MS-FEC1611-1U Installation Instructions Manual

Table 5: Communications Bus and Supply Power Terminal Blocks, Functions, Ratings, Requirements, and
Cables
Terminal Terminal
Block/Port Labels
Label
1 +
FC BUS
-
COM
SHLD
or
1
FC BUS
(Port)
1 +
SA BUS
-
COM
SA PWR
1 Sensor
Sensor
24~ HOT
COM
1 The SA Bus and FC Bus wiring recommendations in this table are for MS/TP bus communications at 38.4k baud. For more
information, refer to the MS/TP Communications Bus Technical Bulletin (LIT-12011034). For more information about N2 bus
communications, refer to the N2 Communications Bus Technical Bulletin (LIT-636018).

Setup and Adjustments

Setting the Device Addresses

Metasys field controllers are master devices on MS/TP (SA or FC) buses. Before operating field 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
the appropriate Communications Technical Bulletin to find valid addresses for these controllers.
The DIP switch block has eight switches numbered 128, 64, 32, 16, 8, 4, 2, and 1
1 are device address switches. Switch 128 is a mode switch that enables a field controller to operate on a ZFR/ZFR
Pro Series Wireless Field Bus. Set switch 128 to Off for all hard-wired SA and FC bus applications. Non-wireless
devices may use addresses greater than 127 if they are using the N2 protocol.
FEC1611 and FEC1621 Field Equipment Controller Installation Instructions
Function, Electrical Ratings/Requirements
FC Bus Communications
Signal Reference (Common) for Bus communications
Isolated terminal (optional shield drain connection)
RJ-12 6-Position Modular Connector provides:
FC Bus Communications
FC Bus Signal Reference and 15 VDC Common
SA Bus Communications
SA Bus Signal Reference and 15 VDC Common
15 VDC Supply Power for Devices on the SA Bus
(Maximum total current draw for SA Bus is 240 mA.)
RJ-12 6-Position Modular Connector provides:
SA Bus Communications
SA Bus Signal Reference and 15 VDC Common
15 VDC Power for devices on the SA bus
24 VAC Power Supply - Hot
Supplies 20–30 VAC (Nominal 24 VAC)
24 VAC Power Supply Common (Isolated from all other
Common terminals on controller)
35 VA
Recommended Cable Type
0.6 mm (22 AWG) stranded, 3-wire
twisted, shielded cable
recommended
24 AWG 3-pair CAT 3 Cable <30.5
m (100 ft)
0.6 mm (22 AWG) stranded, 4-wire
(2 twisted-pairs), shielded cable
recommended.
Note: The + and - wire are one
twisted pair, and the COM and SA
PWR are the second twisted pair of
wires.
24 AWG 3-pair CAT3 cable <30.5
m (100 ft)
0.8 mm to 1.0 mm
(18 AWG) 2-wire
(Figure 3). Consult
(Figure 9). Switches 64 through
19