Wavetronix CLK-421 Quick-reference Guide

Click 421 Serial to Bluetooth®

INSTALLER QUICK-REFERENCE GUIDE

Mount the device

1

e Click 421 mounts over a T-bus for power and communication:

1 If the Click 421 was shipped with the T-bus connector attached, re-

move the connector from the module.

2 Snap the connector onto the DIN rail by positioning it over the rail

with the male connector pointing to the right. Hook one arm over the
edge of the DIN rail and press down on the other arm until it snaps
into place.

3 Connect the T-bus connector to the rest of the T-bus by sliding them

together until you hear them snap into place.

4 Mount the Click 421 onto the DIN rail: position it properly over the

T-bus connector, hook the lip over the lower edge of the DIN rail, and
use a rocking motion to snap the module into place.

Wire power and communication

2

If you are using a Click 200 surge protector with the Click 421, power and communication are provided to
the Click 421 through the T-bus (see the Click 200 Quick-reference Guide). If you don’t have a Click 200
surge protector, use the following steps to wire power and communication into the Click 421:

1 Plug a T-bus 5-screw terminal block into the rst T-bus connector.
2 Wire DC power (9–28 V) from the power supply into the rst screw terminal on the 5-screw terminal

block; wire -DC into the second screw terminal.

3 Connect RS-485 communication (+485, -485 and GND) to either the remaining three screw terminals

on the 5-screw terminal block or to the
screw terminals in the pluggable screw
terminal block on the top of the Click 421
(see labels for correct wiring).

e front of the Click 421 has one other com­munication port.

˽ DB-9 connector – Connect a straight-

through cable here for RS-232 communica­tion

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Attach the antenna

3

e Click 421 has a reversed polarity SMA antenna connector. A whip antenna can be used inside the
cabinet, though if it is inside a metal cabinet, the range will be diminished. An external antenna can also be
mounted on the exterior of the trac cabinet or up on a pole for maximum range. In that case, it is recom­mended you use a Click 250 wireless surge protector:

1 Connect the reversed polarity SMA connector of a coax cable to the Click 421 (antenna must be re-

moved), and connect the N connector to the nonbulkhead end of the Click 250.

2 Connect the N connector of another coax cable to the bulkhead end of the Click 250, and connect the

other end of the cable to the external antenna.

3 Attach a 12 AWG stranded copper grounding wire to the Click 250, then connect the grounding wire to

earth ground.

Use on-device configuration features

4

Use the device’s
conguration
features to make
sure the Click 421
is wired and work­ing properly. e
Click 421 has four

LED activity indicating functions:

Red – Device has power

Blue – Shows when a link is successfully made over Bluetooth to an external device

Yellow – Device is transmitting data

Green – Device is receiving data

LEDs that moni­tor device activity
and help you select operating modes, as well as a push-button, labeled Mode Switch, also used for operating
modes.

1 Check LEDs to make sure the device has power.
2 Autobaud device to make sure it can talk to the sensor or other attached serial device (see table).

Hold the push-button to cycle through modes, then release when the desired mode is reached.

Selection Operating mode Running Completed

failure

Autobaud – Release push-button when green LED is solid to
autobaud to sensor.

Link Test (server) – Release push-button when blue LED is
blinking to perform a link test. The link test is covered in Part

10.

Reset – Release push-button when red LED is blinking to
reset to factory defaults.

connection established

connection not established

success

(LEDs on indefinitely)