User's Manual

37
Figure 2.8 – Surge-to-Rack Card Patch Wiring
Steps 6-7 are used to connect the Command and Control Bridge used for shared
access between all sensors, rack cards, and other Click! devices.
6. Run a long 6-foot patch cord from one of the Click! 222 Bridge ports to Bus
2 of the rack cards.
7. Use the short 8-inch patch cords to create a daisy-chain that shares Bus 2
between all of the rack cards. Bus 2 will be used for command and control.
Once you have completed the wiring, check the main menu LEDs. The red PWR LED
should be on indicating that the card is powered and in normal operating mode. In
normal operating mode you will observe the following:
• The green TD LED will activate whenever the card transmits serial
communications.
• The yellow RD LED will activate whenever the card receives serial
communications.
• The red detection channel LEDS (on top) will light up when a call is placed
on the corresponding contact closure output channel.