User's Manual

C•CURE Watch Installation and Service Guide 8000-2803-01, Rev. 1/A 4-9
Connect Communications Cable
The RF controller provides two RS-485 connectors
for configuration flexibility. RF controllers may be
daisy-chained to the host panel. In addition to RF
controllers, input/output boards may also be
included in the daisy chain.
1. Connect 2-conductor or 4-conductor, shielded
cable to 5-pin terminal block.
Pin Function
Pin 1 TX/RX
Pin 2 TX/RX
Pin 3 RX
Pin 4 RX
Pin 5 Shield
Note: Connection depends on RS-485
implementation. For 2-conductor, half-duplex
mode connect to TX/RX pins. This mode
operates at 9600 baud. For 4-conductor, full-
duplex mode use the TX/RX pins for transmit
and the RX pins for receive.
2. Connect communications cable from panel,
another RF controller, or input/output board to
connector P18 or P36.
NL
3. Do one of the following:
– If another device, is to be connected to this
RF controller, connect additional
communication cable to 5-pin terminal
block and connect to the available RS-485
connector (P18 or P36).
– If a connection terminates at this RF
controller, the shield must be connected to
a chassis ground instead of the RS-485
connector (P18 or P36).
In addition, pins one and two must be
jumpered on the associated termination
jumper.
Connector Jumper Terminated Unterminated
P18 P10 Pins 1 / 2 Pins 3 / 4
P36 P17 Pins 1 / 2 Pins 3 / 4
Connect Sync Cable
RS-422 synchronization (sync) cabling coordinates
transmit and receive signals on a system-wide
basis to eliminate system-generated interference.
ALL RF controllers must be installed with sync
cabling, even if they are associated with different
host systems. Call Technical Support for
synchronization guidelines regarding RF controllers
installed in separate buildings.
Sync cabling establishes a single daisy-chain
connection for all RF controllers. The daisy chain is
installed through one or more common terminal
blocks.
P10 (Shown
Terminated)
P17 (Shown
Unterminated)
RX
P18 P36
TX/RX
RX
Shield
TX/RX