Connecting Remote Control Switches
FC-18 includes 3 remote control switches . Use contact closure remote control (also
known as push-to-make momentary contact) to momentarily connect the desired pin to the
GND pin to select one of the following operations:
Instead of a push-to-make switch, TOGGLE may
be configured to operate with a standard SPST
switch or for TTL level detection (for example, to
use with an occupancy sensor). See Setting the
Toggle Pin Function on page 45.
The Toggle pin function can be defined via the RS-232 & Remote embedded webpage
(see Setting the Toggle Pin Function on page 45). By default, the display toggles on or off
when momentarily connected. By setting the Toggle function, you can set the pin for level-
triggering rather than edge-triggering (i.e., constant contact connection rather than momentary
connection), allowing, for example, connection to an occupancy sensor that triggers the toggle
commands.
Connecting to FC-18 via RS-232
You can connect to the FC-18 via an RS-232 connection using, for example, a PC.
The FC-18 features an RS-232 3-pin terminal block connector allowing the RS-232 to control
the FC-18.
Connect the RS-232 terminal block on the rear panel of the FC-18 to a PC/controller, as
follows:
From the RS-232 9-pin D-sub serial port connect:
• Pin 2 to the TX pin on the FC-18 RS-232 terminal
block.
• Pin 3 to the RX pin on the FC-18 RS-232 terminal
block.
• Pin 5 to the G pin on the FC-18 RS-232 terminal
block.
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